Blackhawk™ by Proto® Screw Starter, Round Shank, Measurement System: Imperial, 9-1/2” Length, Keystone Slotted Starter Tip/Nut, Knurled Grip Handle SPECIFICATIONS Handle Type : Knurled Grip Type : Round Shank Starter Tip/Nut Type : Keystone Slotted Measurement System : Imperial Length : 9-1/2” Use to start the screw with 1-hand inserting or backing off the screw Insert blade into the slot, turn slightly and release The center section of the blade rotates and exerts a positive grip upon the screw slot
