Carbon Steel Hardware Kits Set Rail Sliding Barn Door Rail Hardware Floor Guide Sliding Door Warehouse Door Accessories DoorSpecifications:Colour: BlackMaterial: carbon steelTrack size: about 28 inches/70CMTrack splicing method: 2 piecesScope of application: Door panel thickness 0.5-50MMPacking List:2*track2*scroll wheel2*roller swivel stand1*roller holder3*spacers3*hinge1*floor rail1*sealing strip1*screw pack1*instruction manual3*pipe clamp 35mm3*wood screws