33-Piece Security Bit Set with Magnetic Extension Bit Holder &hellip; Chrome vanadium construction for durability (3) Torq bit sizes: 6mm, 8mm, 10mm; (4) Spanner bit sizes: 4, 6, 8, 10mm (4) Tri-Wing bit sizes: #1, #2, #3, #4; (6) SAE Hex bit sizes: 5/32", 9/64", 1/8", 7/64", 3/32", 5/6 (6) Metric bit sizes: 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm; (9) Torx bit sizes: T8, T10, T15, T20, T25, T2 (1) 2-1/4" Magnetic Extension Bit Holder