Rebar Spacer Wheel & Wire Mesh - Plastic .75", 1", 1.25', 2", 2.5", & 3"Plastic Spacer Wheel (Sizes .75" to 3.0"). NOTE: The Wheel can be used for walls, columns, beams, cast-in-place and prefabrication. The Spacer Wheel has a double fastener that works well for welded mesh and for rebar, maintaining them to the center of the spacer. This lateral spacer is strong and light with minimal surface contact. Size is determined by Rebar Clearance - not the diameter of the wheel. Quantities vary. Click to see the outside dimensions of each size wheel.