Usage Tips:Description Features a 1 Inch Diameter ball bearing wheels for smooth and long lasting quiet operation.Used on 1-3/8 inch thick doors, Max Door Weight up to 220lbs (100kg). Fits Part #1125 and Replaces #1500 Hardware Kit. Compatible with 100, 134F, 138F, 2610F Series Track. This sliding door roller assembly is constructed of a steel bracket and a plastic carriage. The brackets base measures 1 inch x 3 inch, and it features 3 plastic rollers that are spaced apart 1-9/16 inch on center. The wheels are constructed of durable plastic which provide for a smooth, long-lasting, quiet operation, and they feature 1 inch diameter flat edges. These roller assemblies mount on the tops of by-pass sliding doors, bi-fold doors and pocket doors. They are adjustable once installed, and they are used by a of pocket door manufacturers. Colour:As Shown Material:Metal Package Contents: 2 * top hangers 2 * door guides 1 * door stop 1 * wrench 1 * screws sets Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.