IKY1121 Features: * S2 High Alloy Steel bits, the strongest hardest bits available * 4 Phillips and 4 flat tip * 5/16" shank bits * Heat treated, R/C 56-62 * 8 Piece Impact Driver Quality S2 Bit Set Includes: * Comes in a plastic holderHigh quality drive bits fit virtually all hand impact drive tools. Includes the following: Flat Tip bit, 1/4” x .040, 5/16” hex; Flat Tip bit, 5/16” x .050, 5/16” hex; Flat Tip bit, 3/8” x .055, 5/16” hex; Flat Tip bit, 1/2” x .080, 5/16” hex; P1 Philips bit, 5/16” hex; P2 Philips bit, 5/16” hex; P3 Philips bit, 5/16” hex and P4 Philips bit, 5/16” hex. Warranty: * Sets & Kits do not have warranty/ see individual pcs for details