Product Info Catalog Tools Power Drill, Bits & Accessories Master Mechanic 1-Inch #3 Square Recessed Bit Tip Master Mechanic 1-Inch #3 Square Recessed Bit Tip Request a Quote UPC: 52088044674 SKU: 696622 Model Number: 696622 Master Mechanic, 1", #3 Square Recessed Bit Tip, Maximum Durability Shock Resistant Tool Steel, Snub Nose Design Lasts Longer, Higher Torque Advanced Hardening Process.