This router compass is used for cutting circles & arcs from 100mm up to 610mm radius. Made of clear plastic. Printed graduated scale for precise radius setting. Fits to the base of a router. Router not included. Plate has a 30mm hole to allow a 30mm guide bush to locate. Suitable for the following routers directly when using fixing screws Trend T4, T5, T10, T11 Dewalt DW613, 614, 615, 620, 621, 624, 625, 626 Draper PT1200V Elu MOF 96, 131, 177E Makita RP0910, 1110C Performance Pro CLM1250R, 2050R, 127R Contents: 1 x Main Plate 1 x 'V' Pivot Point 1 x 4mm Pivot Point 2 x Fixing screws