The Klein 85664 4-Piece Square Recess Screwdriver contains No. 0 tip, No. 1 tip, No. 2 tip, and No. 3 tip screwdrivers with color-coded handle ends for flying and unproblematic identification. another features : Round shanks with straight recess tips for straight recess screws. Chrome-plated shafts corrosion. Cushion-grip for greater torque and comfort. twofold interior handles provide dry, twist-resistant blade anchors. on most combination head receptacle, switch and panel screws. contains Klein part numbers 660, 661, 662, and 663. : 1.0-Pound. Safety : Always wear approved eye protection. NOT insulated-will NOT against physical phenomenon shock. Do NOT to pry or chisel.