- High-strength S2 alloy steel wearproof durable and long-lasting use.
- Inner Hex Head Dia.: H2.5 (2.5mm) H3 (3mm) H4 (4mm) H5 (5mm) H6 (6mm) H8 (8mm
- Type of head: Hexagon Head; Hex Shank: 6.35mm/ 1/4 Inch; Length: 100mm.
- Strong magnetic Easy to suck the screws when using improve your efficiency.
- Suitable for electric screwdrivers hand screwdrivers electric drills air drills and so on.