KK Hand Tools

Ko-Ken hand tools include professional-grade tools and accessories used for assembly, maintenance, and repair in automotive, industrial, and MRO environments (application dependent). Technicians and maintenance teams typically choose these tools for consistent fit on fasteners, durability under daily use, and better access in tight spaces. Because “hand tools” covers many categories, selecting the right item is mainly about matching the tool type and specifications to your fastener sizes, drive system, and working conditions (per listing).


Explore our full range of Ko-Ken hand tools, including:
Standard and deep sockets (metric and SAE)
Ratchets and breaker bars for high-torque applications
Extension bars for hard-to-reach fasteners
Specialty tools and adaptors for unique jobs


Ko-ken RS4129/5-L37 1/2 Sq. Dr. Bolt Twister set  8mm-16mm  150mm  5 pieces

Ko-ken RS4129/5-L37 1/2 Sq. Dr. Bolt Twister set 8mm-16mm 150mm 5 pieces

SKU: KK-RS4129/5-L37
MPN: RS4129/5-L37

Sale price $70.93 List price $88.66
Save $17.73
Ko-ken RS4129/5-L75 1/2 Sq. Dr. Bolt Twister set  8mm-16mm  150mm  5 pieces

Ko-ken RS4129/5-L75 1/2 Sq. Dr. Bolt Twister set 8mm-16mm 150mm 5 pieces

SKU: KK-RS4129/5-L75
MPN: RS4129/5-L75

Sale price $80.57 List price $100.71
Save $20.14