Security Hex Inch Bit Socket 3/8″ Square Drive with 1/4″ Replaceable Hex Bit 1/8 x 42mm Oal

Hole Drilled in center of bit fits over security pin
Fast Easy Bit replacement using set screw to mount bit
Exact Fit Precision Machined Security Hex Bits
Through Hardened For Maximum Durability
Special CRM-72 Tool Steel, Natural Finish Bit
Chrome Plated Socket standard 3/8′ Square Drive
Set Screw Holds Bits securely