The 20mm Rubber Gym Tile is perfect for general gym areas and functional training areas where lighter weights and kettlebells may be dropped. The 20mm Rubber Gym Tile The 20mm Rubber Gym Tile is perfect for general gym areas and functional training areas where lighter weights and kettlebells may be dropped. Easy to install; these tiles lock together with hidden plastic connectors which go into the bottom of each tile to prevent any movement. No floor adhesive is required. Sizes and Specs Tile Size – 1m x 0.5m x 20mm Tile Weight – 8.7kg (17.4kg per m2) Tile Colour – Black with a 15% EPDM Grey Fleck Tile Material – 100% Recycled Rubber, NR SBR – Natural Rubber / Styrene-butadiene Rubber Base layer – 2-3mm granules Surface Layer – Surface layer fine granules with 15% EPDM Grey fleck. Floor Hardness – is 55+/-5 ShA Simple Installation – Loose lay with the plastic block connector provided. Resistance to chemicals – good resistance to acids, alkalis and salts. Contact with oils and hydrocarb