PB Swiss Tools PB C6-990 30 Bit set in BitBox Pb Swiss Tools Bitbox With 1/4" Screwdriver Bits Also Includes A 50mm Magnetic Bit Extension. Each Precisionbit Is Color Coded According To Screw Profile For Quick Identification. The Colored Plasma Coating Also Protects Against Rust. The Precise Manufacturing Ensures An Optimal Fit In The Screws.