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 or 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 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 hydrocarbons is not advisable and will damage the floor tiles. Tools Required for Fitting – Stanley knife and Rubber hammer Cleaning – Vacuum on the general setting, then lightly mop with a microfibre mop and water mixed with a ph neutral cleaner. Do not flood the floor with water.