D19 17mm 1/2″ BiHex Socket
- Acc. to DIN 3124, ISO 2725-1
- Square drive as per DIN 3120 – C 12,5, ISO 1174, with ball retention groove
- Manually operated, with non-slip cross knurling
- Chrome vanadium steel 31CrV3, ground, chrome-plated
- * not standardised