THIS ABILITYONE ITEM IS EQUIVALENT TO THE FOLLOWING MODELS: PROTO 38734851 WILLIAMS 1217MSC PROTO 1217MT500 MATCO MCL17M2 PROTO 5771217MT500 PROTO J1217MT500 WILLIAMS JHW1217MSC MAC TOOLS M17CL440 MAC TOOLS MB172KS MATCO MCL17M2 PROTO PRO1217MT500 SNAPON SOEXM17 SNAPON SOEXM17. SKILCRAFT ProGrade Combination Wrenches 17mm BRAND NAME: SKILCRAFT. Premium grade, high polish chrome finish 17mm combination wrench with open and box ends. Made of forged and heattreated steel for extra strength and durability, these combination wrenches feature a continuous arc design that distributes applied stress over the entire radius of the open end. The 12point boxend features a 7.5 degree offset broaching that allows users to flip the end for a more advantageous grip in tight spaces. Available in a variety of sizes, these U.S.A. made, Berry Amendment compliant wrenches meet or exceed SAE Aerospace Standard 954 for 12point fasteners and carry a limited lifetime warranty. SDS SHEETS: Yes. ENVIRONMENTAL SUSTAINABILITY (GREEN) INFO: PreConsumer Recycled Content: 0