Package Included:1 x Adjustable Circle Hole Cutter SetSpecifications:Material: AlloyAdjustable capacity 40mm(1.57") to 200mm(7.87")Heavy-duty woodworking construction with longest tool lifeMulti-functions， very convenient and affordableHaving adjustable two sharp blades on both side of the measure-barsAdjustable plane type designComes with hex key， cutter， blades， centre drill bits2 changeable centre bits for thinner or thicker materials freelyCan be used cut many kinds of materials， such as plywood， hardwood， laminates， composite， rubber， plastic， etc