Shockwave, 9 Piece, Impact Hex Insert Bit Set, Designed For Use With Shockwave Magnetic Bit Tip Holders, Custom Alloy76 Steel Maximizes Resistance To Wear & Shock, Precise Fit Custom Machined Tip Prevents Stripping & Reduces Wobble, Set Contains: 9/64", 7/64", 5/64", 5/32", 3/32", 3/16", 1/8", 1/4" & 1/16" Hex Insert Bits.