Master Mechanic, 7 Piece, Screwdriver Bit Set, Includes #1, #2, Phillips Insert Bit Tip, #6-8, Slotted Insert Bit Tip, Square Recess #1,2,3 & Bit Tip Holder, Slotted Bits Full Blade Width & Extra Thickness Fill Slot Reducing Slipping & Breakage, Maximum Durability Shock Resistant Tool Steel.