TEKTON 33-PC. SECURITY BIT SET features: Sandblasted, S-2 Steel Bits, Precision-Milled Tips, 1/4"-Hex Shank Bits Fit all Power Drills, Screwguns, Cordless and Magnetic Drivers, Sizes Fit the Most Commonly Found Tamper Proof Security Fasteners Worldwide, Do It Yourself, Save On Costly Professional Repairs, 3-pc. Torque Bits (1"): 6, 8, 10mm, 4-pc. Spanner Bits (1"): 4, 6, 8, 10mm, 4-pc. Tri-Wing Bits (1"): No. 1, No. 2, No. 3, No. 4, 6-pc. Hex Bits (1"): (SAE) 5/32, 9/64, 1/8, 7/64, 3/32, 5/64, 6-pc. Hex Bits (1"): (Metric) 2, 2.5, 3, 4, 5, 6mm, 9-pc. Star Drive Bits (1"): SD-8, 10, 15, 20, 25, 27, 30, 35, 40, 1-pc. 2-1/2" Magnetic Extension Bit Holder, Complete with PVC Organizer.