The optional circle cutter for the CARVEX jigsaws can be used to cut circles up to nearly ten feet in diameter. It attaches to the optional Guide Rail base (497303) or can be purchased as a set (497443) that includes the base and circle cutter.Requires Base Adapter (497303). Works with all Festool CARVEX jigsaw models.Used for precise circle and arc cutsExtends for cuts between 4-3/8" and 9' 10-1/8" in diameterAttaches tool-free to optional Base Adapter 497303Rolls up for compact storage when not in useCircle dia. from 4-3/8" and 9' 10-1/8" (120 mm - 3 m)In conjunction with adapter table ADT-PS 400Marked in imperial (inches)