Guide bush guides the router when using a template.
Fits directly to Trend T3,T4,T5,T5 MK2, T9,T10 and T11, and some other light duty routers.
Will fit other makes when used with GB/5, GB/PLATE or UNIBASE Sub-base.
Outside diameter: 16mm
Inside diameter: 14mm
Projection from plate: 10mm