1. Easy to start drilling without pre-drilling. Drilling speed is fast and friction is very low. 2. Universally applicable to various metals, plexiglass, and hard plastics. 3. Very suitable for home DIY and general construction projects. 4. Use with needle vise or low-speed electric drill (not suitable for impact drill). 5. Material: high speed steel 6. Dimensions: 16 x 1.5mm 16 x 2mm 15 x 2.5mm 10 x 3mm 10 x 3.2mm 8 x 3.5mm 8 x 4mm 3 x 4.5mm 3 x 5mm 2 x 5.5mm 2 x 6mm 2 x 6.5mm 2 x 8mm 2 x 10mm
