Welding Helmet Interchange System, Attachment Device, Used with Jackson Safety SC 6 Hard Hat ORS NASCO with no slipping or stripping Provides with no slipping or stripping Provides maximum torque without requiring heavy input pressure jaw mechanism naturally grips tighter as more torque is applied to the tool Classic trigger release provides maximum locking force Curved jaw puts tremendous pressure on four points of any style nut or bolt head Provides maximum durability and skid protection Constructed to withstand extreme weather conditions Includes zinc plated eyebolt so you know your PPE is assembled correctly without visual inspection sold separately)