Multi-component Kraft form micro handle with anti-roll feature and swivel cap ESD-safe tool thanks to surface resistance of < 10 Craft Foam Precision Anti-Static ESD Bit Holder Suitable for smartphones, cell phones, cameras, and electronic products ESD-Safe tool thanks to surface resistance of < 10 Compatible Bits: 0.2 inch (4 mm) half moon shank (delvo type), 0.1 inch (4 mm) shank (high male type), Manufacturer: WERA