PORTABLE RAMP: The environmentally friendly ABS materials Easy to move, easy to store and easy to store, small in size, light in weight, good in abrasion and compression resistance, not taking up space for storage ANTI-SKID MATERIAL: Wave pattern design, safe and non-slip, suitableThreshold Length 68-77cm or Height 1.4-2.3cm, prevents machine wheels from stuck, greatly improves pass rate EASY TO USE: Reasonable slope, climbing and overcoming obstacles as if walking on flat ground, gentle slope design, suitable for more sweeping robots, easy climbing EASY TO INSTALL: Installation is a breeze with this ramp set, as it requires no tools and can be set up quickly and easily, providing a user-friendly experience for all,portable ramps for wheelchairs WIDE APPLICATION: Plastic Threshold Ramp Suitable for curb, home garage, loading dock and house driveway use They are ideal for garages, warehouses, barns, shops and stores Size: height: 1.6cm length: 68cm width: 5.3cm Colour: C black Material:ABS Package Contents: 1 x Floor Sweeper Threshold Bars 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.