Cut small and large circles from 1.5” in diameter to 52” in diameter with the CircleGuideKit™. With the included TurnLock™ base plate, this product is compatible with most routers. There is no longer a need for that homemade router circle jig, the CircleGuideKit™ does it all for you and includes everything you need to cut your desired circle. This router guide also includes a BONUS Offset Base for finishing edges on your workpiece. Best used with a plunge router. Small Circle Router Jig Built-in imperial and metric scales, with an easy readout window for setting the diameter of both your inside and outside cuts Quickly and easily attaches to the included TurnLock™ circle guide head With this router guide, you can cut circles from 1.5″ to 12″ in diameter Large Circle Router Jig Built-in imperial and metric scales, with an easy readout window for setting the diameter of both your inside and outside cuts Quickly and easily attaches to the included TurnLock™ circle guide head With this router guide, you can cut circles from 10″ to 52″ in diameter Offset Base 13” offset base provides added stability when finishing the edges on your workpiece using your router Oversized handle knob is easy to grip providing superior control of your router Equipped with the patented TurnLock™ Technology Allows for fast tool-free guide bushing and router attachment exchanges Thumb-activated lock/release mechanism enhances speed and safety when changing tools The TurnLock™ base plate accepts all Milescraft® bushings Base plate compatibility chart and template. Compatible Compact/Palm/Trim Routers: Bosch/Colt PR20EVSPKBosch GFK125CEDeWalt DCW600BDeWalt DWE6000DeWalt DWP611Ridgid R2401Ridgid R24012Ridgid R86044BRidgid R860443BRyobi P601 Not compatible w/o plunge attachment: Makita RT0700C (requires a plunge attachment for installation on the base plate)Makita RT0701C (requires a plunge attachment for installation on the base plate)Makita XTR01 (requires a plunge attachment for installation on the base plate)Bosch/Colt PR20EVS (requires a plunge attachment for installation on the base plate)Milwaukee 2723-20 (requires Milwaukee plunge attachment 48-10-5601, will align with slots I and E.). Not compatible: Porter Cable PC450Bauer 19121E-B