Trend UNIBASE Universal Sub-Base 170mmThe Trend UNIBASE is a router base adaptor designed to allow various router models to use Trend Guide Bushes. This enables wider compatibility and increased diversity for users, fitting directly to most routers with non-standard guide bush fittings.Features Includes a line-up pin for ensuring concentricity of the cutter to the guide bush. Accommodates collet sizes of 1/4 inch, 8mm, 12mm, and 1/2 inch. Compatible with Trend Guide Bushes ranging from 10mm up to 30mm, and a 40mm option for larger cutters.Specifications Brand: Trend MPN: UNIBASE EAN: 5027654320082 Diameter: 170mm Thickness: 8mm Bore: 39mm Recess: 60mm Screw thread: 2BA