Special Tips are designed to produce circulars in 16" (40cm) length. Each tip measures 4" (10cm) and is to be used with cord of 8" (20cm) length. Specially designed to produce 40cm length (cord + tips) Each needle tip is 10cm in length. To be used specially with cord length of 20cm (Product Code: IIA-8101) The cuboid shape in square cross-section gradually gives way to perfectly tapered birch wood needle points. Elegant densified laminated Symfonie Rose wood is rich in appearance