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 15 3/4" by 3 1/8" and 27 1/2" by 3 1/8". Maximum interior dimension 12 9/16" by 24 7/16". Maximum circle diameter 51".
Kit includes clamping flanges, tilt protector, circle routing insert, pivot point and adjustment tool.