Vikundi vya button vya retrac vinatumika hasa katika mchanganyiko wa mwamba mlegevu wenye mwamba uliovunjika. Ubia wa retrac unaweza kusaidia katika kurejesha zana ya kuchimba, kupunguza hali ya kuchomoka na kuzikwa, na kusaidia kuboresha usawa wa shimo la kuchimba.

Kama msambazaji wa vichwa vya kurudi vya China, tunaweza kukupa vichwa vya kurudi vya juu vya ubora ikiwemo vichwa vya kuchimba mawe vya kurudi, kama vile R25 retrac button bit, R28 retrac button bit, R32 retrac button bit, R35 retrac button bit, R38 retrac button bit, T38 retract drill bit, T45 retract drill bit, T51 retract drill bit, GT60 retract button bit, ST58 retrac button bit, ST68 retrac button bit, SR35 retrac drill bit na aina nyingine za vichwa vya kuchimba mawe.

R25

Muonekano	Pembejeo		Vibuttoni		Mchoro wa Maji		Uzito	Nambari ya Mfano.
	[mm]	I'm sorry, but there seems to be a misunderstanding. Please provide the content you would like to have translated to Swahili.	Kipima kiwango [Hapana.] × [mm]	Mbele [Hapana.] × [mm]	Kando [Hapana.]	Mbele [Hapana.]	[kg]
	41	1 5/8″	5 × 9	2 × 8	2	1	0.78	R25-417YFP
	45	1 3/4″	6 × 9	3 × 8	1	3	1	R25-459YFP
	48	1 7/8″	6 × 10	3 × 9	1	3	1.1	R25-489YFP
	51	2″	6 × 10	3 × 9	–	3	1.35	R25-519YFP
	55	2 11/64″	6 × 11	3 × 9	1	3	1.54	R25-559YFP
	57	2 1/4″	6 × 10	3 × 10	–	3	1.6	R25-579YFP
	64	2 1/2″	8 × 11	4 × 10	1	2	2.2	R25-6412YFP

R28

Muonekano	Pembejeo		Vibuttoni		Mchoro wa Maji		Uzito	Nambari ya Mfano.
	[mm]	I'm sorry, but there seems to be a misunderstanding. Please provide the content you would like to have translated to Swahili.	Kipima kiwango [Hapana.] × [mm]	Mbele [Hapana.] × [mm]	Kando [Hapana.]	Mbele [Hapana.]	[kg]
	45	1 3/4″	6 × 9	3 × 8	1	3	1	R28-459YFP
	51	2″	6 × 10	3 × 9	1	3	1.35	R28-519YFP

R32

Muonekano	Pembejeo		Vibuttoni		Mchoro wa Maji		Uzito	Nambari ya Mfano.
	[mm]	I'm sorry, but there seems to be a misunderstanding. Please provide the content you would like to have translated to Swahili.	Kipima kiwango [Hapana.] × [mm]	Mbele [Hapana.] × [mm]	Kando [Hapana.]	Mbele [Hapana.]	[kg]
	45	1 3/4″	6 × 9	3 × 8	1	3	0.9	R32-459YFP
	48	1 7/8″	6 × 10	3 × 9	1	3	1.1	R32-489YFP
	51	2″	6 × 10	3 × 9	–	3	1.2	R32-519YFP
	57	2 1/4″	6 × 10	3 × 10	–	3	1.7	R32-579YFP
	64	2 1/2″	6 × 11	3 × 10	1	2	2.2	R32-649YFP
	60	2 23/64″	8 × 10	4 × 9	1	2	1.7	R32-6012YFP
	64	2 1/2″	8 × 10	4 × 10	2	2	1.9	R32-6412YFP
	76	3″	8 × 12	4 × 11	2	2	2.2	R32-7612YFP
	76	3″	8 × 11	4 × 11, 1 × 11	–	4	3.3	R32-7613YFA

SR35

Muonekano	Pembejeo		Vibuttoni		Mchoro wa Maji		Uzito	Nambari ya Mfano.
	[mm]	I'm sorry, but there seems to be a misunderstanding. Please provide the content you would like to have translated to Swahili.	Kipima kiwango [Hapana.] × [mm]	Mbele [Hapana.] × [mm]	Kando [Hapana.]	Mbele [Hapana.]	[kg]
	51	2″	8 × 9	3 × 9	2	1	1.6	SR35-5111YFP
	54	2 1/8″	8 × 9	3 × 9	2	1	1.8	SR35-5411YFP
	54	2 1/8″	6 × 10	3 × 9	1	3	1.3	SR35-549YFA

R38

Muonekano	Pembejeo		Vibuttoni		Mchoro wa Maji		Uzito	Nambari ya Mfano.
	[mm]	I'm sorry, but there seems to be a misunderstanding. Please provide the content you would like to have translated to Swahili.	Kipima kiwango [Hapana.] × [mm]	Mbele [Hapana.] × [mm]	Kando [Hapana.]	Mbele [Hapana.]	[kg]
	64	2 1/2″	8 × 10	4 × 10	2	2	1.9	R38-6412YFP
	76	3″	8 × 12	4 × 11	2	2	2.2	R38-7612YFP
	64	2 1/2″	6 × 11	3 × 10	1	2	1.9	R38-649YFP
	64	2 1/2″	6 × 11	3 × 10, 1 × 9	1	2	1.9	R38-6410YFA
	64	2 1/2″	8 × 10	4 × 10, 1 × 9	1	4	1.9	R38-6413YFA
	66	2 19/32″	6 × 11	3 × 10, 1 × 9	1	2	1.9	R38-6610YFA
	70	2 3/4″	8 × 10	4 × 10, 1 × 9	1	4	2.4	R38-7013YFA
	76	3″	8 × 11	4 × 11, 1 × 11	–	4	3.3	R38-7613YFA
	89	3 1/2″	8 × 12	4 × 12, 2 × 10	1	4	5.3	R38-8914YFA
	89	3 1/2″	8 × 12	4 × 11, 1 × 11	1	4	5.3	R38-8913YFA

T38

Muonekano	Pembejeo		Vibuttoni		Mchoro wa Maji		Uzito	Nambari ya Mfano.
	[mm]	I'm sorry, but there seems to be a misunderstanding. Please provide the content you would like to have translated to Swahili.	Kipima kiwango [Hapana.] × [mm]	Mbele [Hapana.] × [mm]	Kando [Hapana.]	Mbele [Hapana.]	[kg]
	64	2 1/2″	8 × 10	4 × 10	2	2	1.9	T38-6412YFP
	76	3″	8 × 12	4 × 11	2	2	2.2	T38-7612YFP
	64	2 1/2″	6 × 11	3 × 10	1	2	1.9	T38-649YFP
	64	2 1/2″	6 × 11	3 × 10, 1 × 9	1	2	1.9	T38-6410YFA
	64	2 1/2″	8 × 10	4 × 10, 1 × 9	1	4	1.9	T38-6413YFA
	70	2 3/4″	8 × 10	4 × 10, 1 × 9	1	4	2.4	T38-7013YFA
	65	2 9/16″	6 × 12	4 × 10	1	2	3.1	T38-6510YSP

T45

Muonekano	Pembejeo		Vibuttoni		Mchoro wa Maji		Uzito	Nambari ya Mfano.
	[mm]	I'm sorry, but there seems to be a misunderstanding. Please provide the content you would like to have translated to Swahili.	Kipima kiwango [Hapana.] × [mm]	Mbele [Hapana.] × [mm]	Kando [Hapana.]	Mbele [Hapana.]	[kg]
	76	3″	8 × 12	4 × 11	2	2	2.2	T45-7612YFP
	89	3 1/2″	8 × 13	5 × 12	2	2	5.2	T45-8913YFP
	102	4″	9 × 12	6 × 12	–	3	6.5	T45-10215YFP
	115	4 1/2″	9 × 14	7 × 13	–	3	10	T45-11516YFP
	115	4 1/2″	9 × 14	6 × 13	–	3	10	T45-11515YFP
	76	3″	8 × 11	4 × 11, 1 × 11	–	4	3.2	T45-7613YFA
	89	3 1/2″	8 × 12	4 × 12, 2 × 10	1	4	5.4	T45-8914YFA
	102	4″	8 × 12	4 × 12, 3 × 12	–	4	7.8	T45-10215YFA
	102	4″	8 × 13	4 × 12, 4 × 12	–	4	7.8	T45-10216YFA
	115	4 1/2″	8 × 14	4 × 13, 3 × 12	–	4	7.8	T45-11515YFA
	76	3″	8 × 13	4 × 11, 1 × 11	1	4	3.5	T45-7613YSA
	89	3 1/2″	8 × 12	4 × 12, 1 × 12	1	4	4.7	T45-8913YSA

T51

Muonekano	Pembejeo		Vibuttoni		Mchoro wa Maji		Uzito	Nambari ya Mfano.
	[mm]	I'm sorry, but there seems to be a misunderstanding. Please provide the content you would like to have translated to Swahili.	Kipima kiwango [Hapana.] × [mm]	Mbele [Hapana.] × [mm]	Kando [Hapana.]	Mbele [Hapana.]	[kg]
	89	3 1/2″	8 × 13	5 × 12	2	2	4.6	T51-8913YFP
	102	4″	8 × 14	7 × 12	1	2	7.1	T51-10215YFP
	102	4″	9 × 12	6 × 12	–	3	7.1	T51-10215YFP1
	115	4 1/2″	9 × 14	7 × 13	–	3	10	T51-11516YFP
	115	4 1/2″	9 × 14	6 × 13	–	3	10	T51-11515YFP
	127	5″	9 × 14	7 × 13	–	3	13	T51-12716YFP
	89	3 1/2″	8 × 12	4 × 11, 1 × 11	1	4	5.3	T51-8913YFA
	89	3 1/2″	8 × 12	4 × 12, 2 × 10	1	4	5.4	T51-8914YFA
	102	4″	8 × 12	4 × 12, 3 × 12	–	4	7.8	T51-10215YFA
	102	4″	8 × 13	4 × 12, 4 × 12	–	4	7.8	T51-10216YFA
	115	4 1/2″	8 × 14	4 × 13, 3 × 12	–	4	7.8	T51-11515YFA
	115	4 1/2″	8 × 14	4 × 14, 3 × 12	–	4	7.8	T51-11515YFA1
	115	4 1/2″	8 × 14	4 × 14, 4 × 12	–	4	10	T51-11516YFA
	89	3 1/2″	9 × 11	3 × 11, 2 × 10	1	3	4.8	T51-8914YFA2
	102	4″	9 × 12	3 × 12, 3 × 11	1	3	6.9	T51-10215YFA1
	110	4 21/64″	9 × 14	6 × 12, 2 × 11	–	3	10	T51-11017YFA
	127	5″	8 × 16	4 × 14, 4 × 14	–	4	13.5	T51-12716YFA
	102	4″	8 × 14	4 × 13, 1 × 13	–	2	10.1	T51-10213YSA
	115	4 1/2″	9 × 14	6 × 12, 4 × 12	–	3	9.45	T51-11519YSA

GT60

Muonekano	Pembejeo		Vibuttoni		Mchoro wa Maji		Uzito	Nambari ya Mfano.
	[mm]	I'm sorry, but there seems to be a misunderstanding. Please provide the content you would like to have translated to Swahili.	Kipima kiwango [Hapana.] × [mm]	Mbele [Hapana.] × [mm]	Kando [Hapana.]	Mbele [Hapana.]	[kg]
	92	3 5/8″	9 × 12	9 × 12	–	2	5.1	GT60-9218YSP
	96	3 25/32″	9 × 12	9 × 12	–	2	6.5	GT60-9618YSP
	102	4″	9 × 13	10 × 12	–	2	8.5	GT60-10219YSP
	115	4 1/2″	9 × 14	10 × 12	–	3	10.8	GT60-11519YSP
	127	5″	9 × 16	10 × 14	–	3	15	GT60-12719YSP
	140	5 1/2″	9 × 16	10 × 14	–	3	15	GT60-14019YSP
	152	6″	9 × 16	12 × 16	–	3	20	GT60-15221YSP
	115	4 1/2″	9 × 16	6 × 13	–	3	15	GT60-11515YSP

ST58

Muonekano	Pembejeo		Vibuttoni		Mchoro wa Maji		Uzito	Nambari ya Mfano.
	[mm]	I'm sorry, but there seems to be a misunderstanding. Please provide the content you would like to have translated to Swahili.	Kipima kiwango [Hapana.] × [mm]	Mbele [Hapana.] × [mm]	Kando [Hapana.]	Mbele [Hapana.]	[kg]
	89	3 1/2″	10 × 12	4 × 12, 2 × 12	–	4	5	ST58-8916YSA
	115	4 1/2″	10 × 14	4 × 14, 4 × 14	–	4	10	ST58-11518YSA

ST68

Muonekano	Pembejeo		Vibuttoni		Mchoro wa Maji		Uzito	Nambari ya Mfano.
	[mm]	I'm sorry, but there seems to be a misunderstanding. Please provide the content you would like to have translated to Swahili.	Kipima kiwango [Hapana.] × [mm]	Mbele [Hapana.] × [mm]	Kando [Hapana.]	Mbele [Hapana.]	[kg]
	102	4″	10 × 12	4 × 12, 4 × 12	–	4	9.3	ST68-10218YSA
	115	4 1/2″	10 × 14	4 × 14, 4 × 14	–	4	10	ST68-11518YSA