This steel housing and spring-loaded arm with the 1 in. steel ball bearing roller attached. Used by Bay-Mills as well as a variety of other patio door manufacturers. The roller arm is spring-loaded and adjusted by the adjustment sleeve and screw on top.

• Used by Bays-Mills and a variety of other sliding patio door manufacturers
• Spring-loaded arm with roller attached
• 1 in. diameter steel ball bearing roller
• Stamped steel body and ball bearing roller