UKAS 
Accredited Tool
 Calibration
 & Repair
							 
						 
							
						 
						 
							
						Matt chrome-plated
For hand-operated socket spanners
Square drive as per DIN 3120 - D 20, ISO 1174, with drill hole for locking pin
Coupler as per DIN 3120 - B 20, ISO 1174, with locking pin
Chromium vanadium steel