The innovative Malish Tri-Lok™ Pad Driver offers a unique "all-in-one" construction for quick, adjustment-free installation and fast, effective driving action. The Tri-Lok features a triangular showerfeed system with a smooth wall that delivers over 50% more solution to floor. Patent pending design combines the universal NP-92 clutch plate, built-in riser & triangular showerfeed system for a pad driver capable of handling tough jobs. Fits more than 600 single-disc rotary floor machine models. Block Type: Plastic. Drives all standard or economy floor pads & bonnets.