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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-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

Save $1.57
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

Save $1.57
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

Save $1.57
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

Save $1.57
Ko-ken 4285Z 1/2 Sq. Dr. Socket set Z-series 21 pieces

Ko-ken 4285Z 1/2 Sq. Dr. Socket set Z-series 21 pieces

SKU: KK-4285Z
MPN: 4285Z

Save $122.20
Ko-ken 4285ZE 1/2 Sq. Dr. Socket set Z-series 11 pieces

Ko-ken 4285ZE 1/2 Sq. Dr. Socket set Z-series 11 pieces

SKU: KK-4285ZE
MPN: 4285ZE

Save $62.67
Ko-ken 4400MZ-10 1/2 Sq. Dr. Socket 10mm 6 point Length 26mm Z-series

Ko-ken 4400MZ-10 1/2 Sq. Dr. Socket 10mm 6 point Length 26mm Z-series

SKU: KK-4400MZ-10
MPN: 4400MZ-10

Save $1.89
Ko-ken 4400MZ-12 1/2 Sq. Dr. Socket 12mm 6 point Length 27mm Z-series

Ko-ken 4400MZ-12 1/2 Sq. Dr. Socket 12mm 6 point Length 27mm Z-series

SKU: KK-4400MZ-12
MPN: 4400MZ-12

Save $1.89
Ko-ken 4400MZ-13 1/2 Sq. Dr. Socket 13mm 6 point Length 28mm Z-series

Ko-ken 4400MZ-13 1/2 Sq. Dr. Socket 13mm 6 point Length 28mm Z-series

SKU: KK-4400MZ-13
MPN: 4400MZ-13

Save $1.89
Ko-ken 4400MZ-14 1/2 Sq. Dr. Socket 14mm 6 point Length 28mm Z-series

Ko-ken 4400MZ-14 1/2 Sq. Dr. Socket 14mm 6 point Length 28mm Z-series

SKU: KK-4400MZ-14
MPN: 4400MZ-14

Save $1.92
Ko-ken 4400MZ-16 1/2 Sq. Dr. Socket 16mm 6 point Length 29mm Z-series

Ko-ken 4400MZ-16 1/2 Sq. Dr. Socket 16mm 6 point Length 29mm Z-series

SKU: KK-4400MZ-16
MPN: 4400MZ-16

Save $2.01
Ko-ken 4400MZ-17 1/2 Sq. Dr. Socket 17mm 6 point Length 29mm Z-series

Ko-ken 4400MZ-17 1/2 Sq. Dr. Socket 17mm 6 point Length 29mm Z-series

SKU: KK-4400MZ-17
MPN: 4400MZ-17

Save $2.01
Ko-ken 4400MZ-18 1/2 Sq. Dr. Socket 18mm 6 point Length 29mm Z-series

Ko-ken 4400MZ-18 1/2 Sq. Dr. Socket 18mm 6 point Length 29mm Z-series

SKU: KK-4400MZ-18
MPN: 4400MZ-18

Save $2.16
Ko-ken 4400MZ-19 1/2 Sq. Dr. Socket 19mm 6 point Length 29mm Z-series

Ko-ken 4400MZ-19 1/2 Sq. Dr. Socket 19mm 6 point Length 29mm Z-series

SKU: KK-4400MZ-19
MPN: 4400MZ-19

Save $2.16
Ko-ken 4400MZ-21 1/2 Sq. Dr. Socket 21mm 6 point Length 29mm Z-series

Ko-ken 4400MZ-21 1/2 Sq. Dr. Socket 21mm 6 point Length 29mm Z-series

SKU: KK-4400MZ-21
MPN: 4400MZ-21

Save $2.98
Ko-ken 4400MZ-22 1/2 Sq. Dr. Socket 22mm 6 point Length 29mm Z-series

Ko-ken 4400MZ-22 1/2 Sq. Dr. Socket 22mm 6 point Length 29mm Z-series

SKU: KK-4400MZ-22
MPN: 4400MZ-22

Save $2.98
Ko-ken 4400MZ-24 1/2 Sq. Dr. Socket 24mm 6 point Length 29mm Z-series

Ko-ken 4400MZ-24 1/2 Sq. Dr. Socket 24mm 6 point Length 29mm Z-series

SKU: KK-4400MZ-24
MPN: 4400MZ-24

Save $3.43
Ko-ken 4400MZ-27 1/2 Sq. Dr. Socket 27mm 6 point Length 30mm Z-series

Ko-ken 4400MZ-27 1/2 Sq. Dr. Socket 27mm 6 point Length 30mm Z-series

SKU: KK-4400MZ-27
MPN: 4400MZ-27

Save $3.84
Ko-ken 4400MZ-30 1/2 Sq. Dr. Socket 30mm 6 point Length 31mm Z-series

Ko-ken 4400MZ-30 1/2 Sq. Dr. Socket 30mm 6 point Length 31mm Z-series

SKU: KK-4400MZ-30
MPN: 4400MZ-30

Save $4.07
Ko-ken 4400MZ-32 1/2 Sq. Dr. Socket 32mm 6 point Length 32mm Z-series

Ko-ken 4400MZ-32 1/2 Sq. Dr. Socket 32mm 6 point Length 32mm Z-series

SKU: KK-4400MZ-32
MPN: 4400MZ-32

Save $4.40
Ko-ken 4400MZ-8 1/2 Sq. Dr. Socket 8mm 6 point Length 26mm Z-series

Ko-ken 4400MZ-8 1/2 Sq. Dr. Socket 8mm 6 point Length 26mm Z-series

SKU: KK-4400MZ-8
MPN: 4400MZ-8

Save $1.89
Ko-ken P2285Z 1/4 Sq. Dr. Socket set Z-series 26 pieces

Ko-ken P2285Z 1/4 Sq. Dr. Socket set Z-series 26 pieces

SKU: KK-P2285Z
MPN: P2285Z

Save $76.69
Ko-ken RS2300XZ/9 1/4 Sq. Dr. Socket set 5.5-14mm 6 point Z-series 9 pieces

Ko-ken RS2300XZ/9 1/4 Sq. Dr. Socket set 5.5-14mm 6 point Z-series 9 pieces

SKU: KK-RS2300XZ/9
MPN: RS2300XZ/9

Save $30.85
Ko-ken RS2400MZ/12 1/4 Sq. Dr. Socket set 4-14mm 6 point Z-series 12 pieces

Ko-ken RS2400MZ/12 1/4 Sq. Dr. Socket set 4-14mm 6 point Z-series 12 pieces

SKU: KK-RS2400MZ/12
MPN: RS2400MZ/12

Save $26.02