Replacement gliders for the ROX Tri-Glide spreader, sold in pairs, one for each end of the blade. Glider thickness sets the applied depth of the screed, so changing gliders changes the pour thickness. Each glider carries three working faces; when one wears, unscrew it and rotate to the next without tools. The parent tool spreads self-smoothing and self-levelling cement, epoxy and urethane screeds from 3 mm to 10 mm. ROX Tri-Glide.