Trend UNIBASE/180 Universal Plunge Router Sub-Base with 23 Hole Patterns to suit most 1/2in plunge routers, including 18V cordless models. The Trend Universal Plunge Router Sub-Base unlocks the potential of your router by providing improved concentricity and compatibility with Trend Guide Bushes.Made from reinforced nylon for a low-friction, precise routing surface.The Precision Centring System ensures perfect concentricity between cutter and guide bush for pinpoint accuracy with routing jigs. Reinforced threaded brass inserts provide secure mounting points for guide bushes. The Quick Pattern Finder makes locating the hole pattern for your router quick and easy. A screw pack helps you to find the right screws easily and keeps them neat when not in use. 180mm