Prime-Line D 1723 Roller Assembly 1-1/4 in Dia Roller Steel 1-Roller Plain Back Mounting

Used by many patio door manufacturers. Steel ball bearing roller in adjustable 2-5/8 in L x 1-3/8 in H x 3/4 in D steel housing with 10-32 machine thread hole on top center and 1/4-20 side threads for mounting.