Prime-Line 1-1/4 in. Nylon Ball Bearing Sliding Door Tandem Roller Assembly

This is a plain back tandem roller assembly used by a variety of patio door manufacturers of metal or vinyl framed patio doors. It has two in-line 1-1/4 in. concave nylon ball bearing rollers set in a stamped steel housing with rear adjustment. The housing is 3/4 in. wide, 1-1/32 in. tall and 3-1/8 in. long with a 1/4-20 threaded mounting hole on the back end and an optional use 10-32 threaded hole on the top.