Additional Details ------------------------------ Product description: Length: 3-1/8 in. Color: White. Material: Steel. Used by several door manufacturers. Steel ball bearing tandem roller assembly for sliding glass doors. Adjustable steel housing. Adjusts from 1-1/8 to 1-5/16 inch. Flare width: 13/16. Width: 1-1/8 in. OD in. Application: Tandem.