THE PRODUCT IS MADE BY XCALIBUR TOOLING. TenonIng Jig Woodworking Clamps Suit for Table Saws. Tough, high quality and high precision cutting. 30 years in woodworking industry. Heavy cast iron construction and precision adjustment points combine to produce perfect tenons for mortise and tenon joinery. This Tenoning Jig also adjusts for angled tenon cutting set-ups. Standard 3/8" x 3/4" mitre bar fits most mitre gauge slots including T-slots Of This Standard size. Our customer service team will help you with any queries. Do you need blades with different measurements?