UKAS 
Accredited Tool
 Calibration
 & Repair
							 
						 
							
						 
						 
							
						Matt chrome-plated
For hand-operated socket spanners
Square drive as per DIN 3120 - C 10, ISO 1174, with ball retention groove
Coupler based on DIN 3120 - A 10, ISO 1174, with ball lock
Chromium vanadium steel