Anodized aluminum profile with integrated rule adjusts easily, accurate to 1/32". Rout circles, make precise inside or outside cuts, combine sets for unlimited size. Profiles are 7 7/8" by 3 1/8" and 15 3/4" by 3 1/8". Maximum interior dimension 4 11/16" by 12 9/16". Maximum circle diameter 34".
Kit includes clamping flanges, tilt protector, circle routing insert, pivot point and adjustment tool.