Long Spline & Short XZN Triple Square Bit Socket Set. 3 Pcs - 1/4" Dr. x 1-29/64" (37mm): M4, M5, M6 S2 bits. 3 Pcs - 1/4" Dr. x 4" (100mm): M4, M5, M6 S2 bits. 7 Pcs - 3/8" Dr. x 1-57/64" (48mm): M7, M8, M9, M10, M12, M13 (tamper-proof), M14 (tamper-proof) S2 bits.