UKAS 
Accredited Tool
 Calibration
 & Repair
							 
						 
							
						 
						 
							
						Acc. to DIN 3124, ISO 2725-1
Square drive as per DIN 3120 - C 10, ISO 1174, with ball retention groove
Manually operated, with non-slip cross knurling
GEDORE vanadium steel 31CrV3, polished, chrome-plated
* not standardised