The addition of a PROXXON OFV will turn a mini-drill or grinder into a very useful miniature router which may be well suited to toy making or dolls house projects. The 20mm collar allows you to easily connect to PROXXON's other 20mm collar tools. The base is made from die-cast aluminium with a milled working surface and a fence is also included with a maximum throat depth of 150mm. In addition, there is an interchangeable circle guide. The router base has an adjustable bench stop with a pre-selectable travel stroke. It can also be used as a drilling guide for round parts as a triangular prism is provided in the work base.