THIS ABILITYONE ITEM IS EQUIVALENT TO THE FOLLOWING MODELS: MATCO MCL102 PROTO 39942990 WILLIAMS 1210SC PROTO 1210T500 PROTO 5771210T500 PROTO J1210T500 WILLIAMS JHW1210SC MATCO MCL102 PROTO PRO1210T500 SNAPON SOEX10 SNAPON SOEX10. SKILCRAFT ProGrade Combination Wrenches 5/16 BRAND NAME: SKILCRAFT. Premium grade, high polish chrome finish 5/16 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