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KK Z-Series

Ko-Ken Z-Series

Ko-Ken Z-Series: Professional-Grade Impact Sockets

KK Z Series products are tools and tool accessories from the Z‑Series lineup, built for professional use in automotive, industrial maintenance, and MRO environments (application dependent). Z‑Series collections are typically chosen when technicians want consistent fit, durability, and a clean, organized way to standardize tooling across common fastener sizes. Because “Z Series” can include multiple tool types, selecting the right item is mainly about matching the product category and specifications to your drive system and fasteners (per listing).

Ko-ken 3400MZ-10 3/8 Sq. Dr. Socket 10mm 6 point Length 20mm Z-series

Ko-ken 3400MZ-10 3/8 Sq. Dr. Socket 10mm 6 point Length 20mm Z-series

SKU: KK-3400MZ-10
MPN: 3400MZ-10

Save $1.57
Ko-ken 3400MZ-11 3/8 Sq. Dr. Socket 11mm 6 point Length 21mm Z-series

Ko-ken 3400MZ-11 3/8 Sq. Dr. Socket 11mm 6 point Length 21mm Z-series

SKU: KK-3400MZ-11
MPN: 3400MZ-11

Save $1.57
Ko-ken 3400MZ-12 3/8 Sq. Dr. Socket 12mm 6 point Length 21mm Z-series

Ko-ken 3400MZ-12 3/8 Sq. Dr. Socket 12mm 6 point Length 21mm Z-series

SKU: KK-3400MZ-12
MPN: 3400MZ-12

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Ko-ken 3400MZ-13 3/8 Sq. Dr. Socket 13mm 6 point Length 21mm Z-series

Ko-ken 3400MZ-13 3/8 Sq. Dr. Socket 13mm 6 point Length 21mm Z-series

SKU: KK-3400MZ-13
MPN: 3400MZ-13

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Ko-ken 3400MZ-14 3/8 Sq. Dr. Socket 14mm 6 point Length 21mm Z-series

Ko-ken 3400MZ-14 3/8 Sq. Dr. Socket 14mm 6 point Length 21mm Z-series

SKU: KK-3400MZ-14
MPN: 3400MZ-14

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Ko-ken 3400MZ-15 3/8 Sq. Dr. Socket 15mm 6 point Length 21mm Z-series

Ko-ken 3400MZ-15 3/8 Sq. Dr. Socket 15mm 6 point Length 21mm Z-series

SKU: KK-3400MZ-15
MPN: 3400MZ-15

Save $1.89
Ko-ken 3400MZ-16 3/8 Sq. Dr. Socket 16mm 6 point Length 21mm Z-series

Ko-ken 3400MZ-16 3/8 Sq. Dr. Socket 16mm 6 point Length 21mm Z-series

SKU: KK-3400MZ-16
MPN: 3400MZ-16

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Ko-ken 3400MZ-17 3/8 Sq. Dr. Socket 17mm 6 point Length 21mm Z-series

Ko-ken 3400MZ-17 3/8 Sq. Dr. Socket 17mm 6 point Length 21mm Z-series

SKU: KK-3400MZ-17
MPN: 3400MZ-17

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Ko-ken 3400MZ-18 3/8 Sq. Dr. Socket 18mm 6 point Length 22mm Z-series

Ko-ken 3400MZ-18 3/8 Sq. Dr. Socket 18mm 6 point Length 22mm Z-series

SKU: KK-3400MZ-18
MPN: 3400MZ-18

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Ko-ken 3400MZ-19 3/8 Sq. Dr. Socket 19mm 6 point Length 22mm Z-series

Ko-ken 3400MZ-19 3/8 Sq. Dr. Socket 19mm 6 point Length 22mm Z-series

SKU: KK-3400MZ-19
MPN: 3400MZ-19

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Ko-ken 3400MZ-21 3/8 Sq. Dr. Socket 21mm 6 point Length 23mm Z-series

Ko-ken 3400MZ-21 3/8 Sq. Dr. Socket 21mm 6 point Length 23mm Z-series

SKU: KK-3400MZ-21
MPN: 3400MZ-21

Save $2.98
Ko-ken 3400MZ-22 3/8 Sq. Dr. Socket 22mm 6 point Length 23mm Z-series

Ko-ken 3400MZ-22 3/8 Sq. Dr. Socket 22mm 6 point Length 23mm Z-series

SKU: KK-3400MZ-22
MPN: 3400MZ-22

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Ko-ken 3400MZ-5.5 3/8 Sq. Dr. Socket 5.5mm 6 point Length 19mm Z-series

Ko-ken 3400MZ-5.5 3/8 Sq. Dr. Socket 5.5mm 6 point Length 19mm Z-series

SKU: KK-3400MZ-5.5
MPN: 3400MZ-5.5

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Ko-ken 3400MZ-6 3/8 Sq. Dr. Socket 6mm 6 point Length 19mm Z-series

Ko-ken 3400MZ-6 3/8 Sq. Dr. Socket 6mm 6 point Length 19mm Z-series

SKU: KK-3400MZ-6
MPN: 3400MZ-6

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Ko-ken 3400MZ-7 3/8 Sq. Dr. Socket 7mm 6 point Length 19mm Z-series

Ko-ken 3400MZ-7 3/8 Sq. Dr. Socket 7mm 6 point Length 19mm Z-series

SKU: KK-3400MZ-7
MPN: 3400MZ-7

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Ko-ken 3400MZ-8 3/8 Sq. Dr. Socket 8mm 6 point Length 20mm Z-series

Ko-ken 3400MZ-8 3/8 Sq. Dr. Socket 8mm 6 point Length 20mm Z-series

SKU: KK-3400MZ-8
MPN: 3400MZ-8

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Ko-ken 3725RK-2 Renewal Kit for 3725Z, ZS and 3726Z, ZS 72T Ratchets

Ko-ken 3725RK-2 Renewal Kit for 3725Z, ZS and 3726Z, ZS 72T Ratchets

SKU: KK-3725RK-2
MPN: 3725RK-2

Save $7.08
Ko-ken 3756Z 3/8 Sq. Dr. Quick Spinner 3/8 Square Length 25mm Z-series

Ko-ken 3756Z 3/8 Sq. Dr. Quick Spinner 3/8 Square Length 25mm Z-series

SKU: KK-3756Z
MPN: 3756Z

Save $4.73
Ko-ken 3756Z-1/2 3/8 Sq. Dr. Quick Spinner Adaptor 1/2 Square Length 29mm Z-series

Ko-ken 3756Z-1/2 3/8 Sq. Dr. Quick Spinner Adaptor 1/2 Square Length 29mm Z-series

SKU: KK-3756Z-1/2
MPN: 3756Z-1/2

Save $5.08
Ko-ken 3756ZS 3/8 Sq. Dr. Quick Spinner 3/8 Square Length 25mm Z-series

Ko-ken 3756ZS 3/8 Sq. Dr. Quick Spinner 3/8 Square Length 25mm Z-series

SKU: KK-3756ZS
MPN: 3756ZS

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Ko-ken 3768Z-250 3/8 Sq. Dr. Hinge Handle Length 250mm Z-series

Ko-ken 3768Z-250 3/8 Sq. Dr. Hinge Handle Length 250mm Z-series

SKU: KK-3768Z-250
MPN: 3768Z-250

Save $11.43
Ko-ken 3768Z-400 3/8 Sq. Dr. Hinge Handle Length 400mm Z-series

Ko-ken 3768Z-400 3/8 Sq. Dr. Hinge Handle Length 400mm Z-series

SKU: KK-3768Z-400
MPN: 3768Z-400

Save $19.72
Ko-ken 3771Z 3/8 Sq. Dr. Universal Joint 3/8 Square Length 42.5mm Z-series

Ko-ken 3771Z 3/8 Sq. Dr. Universal Joint 3/8 Square Length 42.5mm Z-series

SKU: KK-3771Z
MPN: 3771Z

Save $6.69
Ko-ken 3772Z 3/8 Sq. Dr. Universal Double Joint 3/8 Square Length 65mm Z-series

Ko-ken 3772Z 3/8 Sq. Dr. Universal Double Joint 3/8 Square Length 65mm Z-series

SKU: KK-3772Z
MPN: 3772Z

Save $10.70