Plastic grade plate spacers, more commonly known as plastic hi chairs, cone spacers and plastic spacers. These “grade-plate” spacers are a double cover spacer for use in reinforcing floor slabs offering a stable support for reinforcing mesh and rebar. For use on large scale reinforcing and smaller DIY projects. Heights available 25/30mm 40/50mm 65/75mm and 90/100mm. A full range of rebar accessories are also available from tying wire to stock reinforcing bar.