Roller Lock The RollerLock system is a patented design engineered to reduce roller refill slippage and improve contact on surfaces. Home > Catalogue > Floor Coating Applicators > Roller Lock FIND THE RIGHT FLOORCOATINGAPPLICATORS Filament Type SyntheticBlack BristleWhite Bristle Surface Type Smooth Surface (5mm Nap)Wood (primed)Drywall (primed)Semi-Smooth Surface (10 mm Nap)Masonry BlockSemi-Smooth Surface (13 mm Nap)Semi-Rough Surface (15mm Nap)Plaster (primed)Rough Surface (20 mm Nap)StuccoVery Rough Surface (25mm Nap) Brush Type Wall Brush Handle Style Thin BeavertailPlastic Handle Flex SoftMedium Roller Cover Material Woven Lint Free SHOW FLOOR COATING APPLICATORS Roller Lock Frame (wood) 9.5" and 12" Roller Lock Frame (plastic) 9.5" and 12"