... PAD,Shim Pad,Concrete Accessory,Rebar Accessories Material: PP PEPlastic solid shims are idea for packing during construction involving precast concrete units.Item CodeSizeThicknessQty ... *70 mm20mm25029Plastic spacer,Flat Type,PVC Shim PAD,Shim Pad,Concrete Accessory,Rebar Accessories Square Type Shim for concrete