For precise centering of template guides and attached subbases</br>For Bosch routers that have the Precision Centering Design</br>Used for centering template guides</br></br>Product Description</br></br>The Bosch RA1151 Router Sub base Centering Pin and Cone is used on Bosch routers that have the Precision Centering Design. The RA1151 centers template guides and sub bases. For use with RA1161?? RA1162?? RA1166?? 1613AEVS?? 1617?? 1617EVS?? 1617EVSPK?? 1617PK?? 1618EVS?? 1619EVS?? 1617EVSTB?? MRF01 Fixed Base?? MRP01 Plunge Base?? MRC23EVSK?? MRP23EVS and MRF23EVS routers.</br><br/>http://www.amazon.com/gp/product/B004Z8SM6M