UKAS 
Accredited Tool
 Calibration
 & Repair
							 
						 
							
						 
						 
							
						Acc. to DIN 7427
For bits with external hexagon drive to DIN 3126 - C 6.3 E 6.3 (1/4"), external hexagon drive to DIN 3126 - C 6.3 (1/4") for use in chucks