Check the listing for details. Light Source Mega-Slim Coupler, Black. Color: Black, Condition: New. Listed at 24.40 USD. Light Source Mega-Slim Coupler - Black The Light Source Mega-Slim Coupler is a lower profile option for smaller light fixtures. It is half the size of the Light Source standard Mega-Coupler and weighs 30% less; yet fits the same as the Mega-Coupler. The Mega Slim will fasten from 1-1/4" pipe (1.66 OD) to 2.050 OD Truss Tube. It has a wide wing nut for easy fastening of the coupler to the pipe or tube as well as a hex pocket for 3/8" bolt. Includes 3/8?×1? zinc plated bolt with nylock nut and spring washer. The bolt fits flush into the coupler.Minimum Size: 1.25" pipe, 1.66 OD pipeMaximum Size: 1.5" pipe, 1.90 OD pipe, 2.050" OD Truss TubeWorking Load Limit: 500 lbsHardware: 3/8? × 1? Hex Cap Screw, Belleville Washer, Nylock NutWeight: 0.65 lbsFinish: Black Anodized