- Standard: NF ISO 2725-1, NF ISO 1173, ISO 2725-1, ISO 1173, DIN 3124,
- For series 1 bits - 1/4 "- 6.35 mm driver.
- The R.245 cap includes a snap lock for secure attachment of tips. For occasional disassembly. The square driver has a hole for a ball latch or a hook.