The APEX® Industrial line of fastening accessories help to maximize performance in construction, service trades, general maintenance, repair and light manufacturing assembly applications. Proprietary heat treat process maximizes bit life. Full body design for greater strength & durability. Optimized tip geometry for best fit. Includes the following... SQ1: QTY 2, SQ2: QTY 6, PH1: QTY 2, PH2: QTY 8, PH3: QTY 2, T20: QTY 2, T25: QTY 6, SL6-8: QTY 2, PH2: QTY 2, T25: QTY 2, SQ2: QTY 1, QR 2-1/4in QTY 1, NS 2-9/16in QTY 2.