Rugged construction, 1/8" threaded tubing, right-hand welded, hard yolks to support flares and shadows; Sockets are rated for more power but we use 7w LEDs so for us Cat's Cradle can't beat the price if you're just trying to fix an old light fixture. . I simply installed it into an existing ceiling canopy. . 1/8" pipe fits snugly. CONS: NO ground wire... what to do with that? I installed a crimping eyelet under one of the yolk screws to fix this problem. . We don't all live in 170 year old Victorian farmhouses in the Hamptons