Prime Line M 6151 Shower Door Ball Bearing Roller

3/4″ tub and shower door nylon ball bearing roller with an oval edged wheel. it has a threaded hex head hub that uses an 8-32 x 3/8 in. long philips binder head machine screw to fasten it to the door bracket. used on a variety of different tub and shower top roller systems. use prime-line part m 6000 for 3/4 in. roller.