Rebar chair are used between high-rise concrete foundation slabs or large equipment foundations and high-rise concrete slabs in high-rise buildings. The plastic rebar chair is used to support the weight of the upper reinforcing steel bar and control the height of the reinforcing steel bar. It has high strength, good elasticity, antistatic, high temperature resistance, and environmental protection. Can greatly improve the quality of the project, using this product can also make the construction of the project faster, can save man-hours, greatly speed up the construction progress, shorten the construction cycle.1.Suitable for supporting both reinforcing mesh and bar in slab-on-ground applications.2.Slab-on-ground spacers are made to cover two heights3.With a dual-size plastic reinforcing4.With a flat base to minimize penetration through the waterproof membrane5.Supplied stacked in the bag to minimize storage spacer