This sliding door hardware kit is a great design for home use. The door is hung on the roller parts with wheels to smoothly slide on the track. Made of sturdy steel, it is durable and heavy-duty, which will offer a good performance. Note: This door hardware set is suitable to mounted on walls constructed by bricks, concrete, and hollow bricks. Specifications: Color: Black Material: Steel Craft: Powder-Coating Door Weight Capacity: 200KG / 440.9LB Door Thickness Range: From 1 3/8" To 1 5/8" Max.Door Width: 40" Whole Set Weight: 6.4kg / 14.11LB Package Size: 102.5 * 12.5 * 8.5cm / 40.35 * 4.92 * 3.34in Package Weight: 7kg / 15.43LB Package Included: 1 * Sliding Door Hardware Kit 1 * Assembling Instruction