The inclusion of the socket adapter means I can use these sockets with the powerful M12 Fuel Surge 1/4 inch impact driver. The M12 ratchet and M18 1/2 inch impact gun got to have a go too. The excellent non-slip hex geometry means the sockets can still drive bolts with worn and damaged corners. The most obvious feature of these sockets is the large, clear etched and inked size markings. A great advantage to users in many circumstances. The rail is good quality and helps to ensure inventory control as it is so obvious when a socket is not on the rail. Find it on the Home Depot website by searching for this unique reference number, 315633807
