Features: High performance: Made from heavy-duty cold rolled steel, POM, and zinc alloy that will offer a reliable performance. Roll stopper: To prevent excessive sliding. Strong floor guide: To stabilize door movement. Application: Great for various sliding doors for any 35 to 45mm thick wood door Wall requirements: Because the door is suspended, all rely on the orbit above the gravity to resist, so brick or concrete metope can be installed, hollow brick or foam brick can not be. Descriptions: This sliding wood door hardware kit is a great design for home. Spacing saving and easy installation. Easy to use and environmental friendly.. Specifications: Model: C01 Color: black Material: cold rolled steel, POM, zinc alloy Item size: approx.91*4*0.5, 100.5*4*0.5, 100.5**4*0.5CM Package size: approx.95*11.5*7.7, 104*11.5*7.7, 104*11.5*7.7CM Length: 1.83M, 2M, 2.44M Max. load: 100kg Package Included: 1.83M/2M 2 x Rail With Pre-Drilled Holes 2 x Rollers 1 x Ground Guide 2 x Door Stops 2 x Anti-Jump Disk 5 x Clips 1 x Installation Took Kit 1 x Installation 2.44M 3 x Rail With Pre-Drilled Holes 2 x Rollers 1 x Ground Guide 2 x Door Stops 2 x Anti-Jump Disk 7 x Clips 1 x Installation Took Kit 1 x Installation