The Model M300 PRO Jasper Large Circle Guide is the same as the M300 Guide except it is made of virtually unbreakable polycarbonate plastic. These guides make circles from 7 to 52 3/4 inches in 1/4 inch increments. Please see pictures for Router and base compatibility. These are made for use with a plunge router.
Q - My router is not listed on the router compatibility table. Will the circle guide or adapter plate fit on my router?
A - Remove the base plate from your router (if it is removable) and measure the distance between the mounting holes on the base of your router. Compare these measurements with the dimensions on the layout picture. If you can find a layout that is the same it will fit. Ignore the manufacturers listed on the layouts as many manufactures use the same layout.
Routers we don't fit - Festool, Triton, Black & Decker RP250, Bosch 3.5 HP
Circle cutting jig is great for making speaker cutouts
Precision-drilled pivot holes keep pins in selected holes
Easily read scale is calibrated for a 1/2-inch router bit
Mounts directly to the base of 19 different models of plunge routers
This PRO Model is made of virtually unbreakable polycarbonate plastic, the same material used to make PRO Football helmets!