20PC Micro HSS Drills & GN531 PCB Archimedes Push Drill 0-2mm Suit Craft & Hobby. Description. 185mm PCB Archimedes Spiral Push/Twist Drill. A quality hand drill operated by depressing the body of the drill downwards. Supplied with collets giving a capacity of 0-2mm. Length: 185mm 20pc HSS MICRO TWIST DRILLS Drill set in a plastic indexed box with sliding window. The specially designed box keeps bits securely in place and dispenses only one bit at a time. SIZES: 0.3 mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, 1.0mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, & 1.6mm. Qty-:1 pc only