... ISO,GB,DIN,JIS 4.ISO9001-2008,SGS,ROHS L type hexagon keys 2) Dimensions Product name Stainless steel ... ,6.8,8.8,12.9Material grade A2,A4,high stress steel.ColorPlain, blue plated, white plated, yellow ... features of L type hexagon keys The tool is simple, small and light.The contact surfaces of the screw or ... .The tool can be used with a headless screw.The screw can be inserted into its hole using the ...