RYOT4 NM HARDNER is a nonmetallic dry shake concrete floor hardener for hardening concrete flat work, resulting hard, non-slip, non-rust surfaces for both interior and exterior application. RYOT4 HARDNER provides a highly abrasion resistant, dense and nonporous surface to a concrete floor. It is applied by the dry shake method which ensures that hard wearing surface bonds monolithically to the base concrete. It is specially formulated for use in stamping concrete, textured and imprinted concrete paving and flooring.