THIS ABILITYONE ITEM IS EQUIVALENT TO THE FOLLOWING MODELS: MATCO MCL182 PROTO 38734869 WILLIAMS 1218SC PROTO 1218T500 STANLEY 449N70 PROTO 5771218T500 MAC TOOLS CB182KS PROTO J1218T500 WILLIAMS JHW1218SC MATCO MCL182 PROTO PRO1218T500 SNAPON SOEX18 SNAPON SOEX18. SKILCRAFT ProGrade Combination Wrenches 9/16 BRAND NAME: SKILCRAFT. Premium grade, high polish chrome finish 9/16 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