• Range 3 mm to 35 mm or 1/8" to 1-3/8" • Suitable for copper, aluminium, copper-zinc alloy, steel and stainless-steel • Cutting wheel mounted in a pin with ball for quick replacement • Support wheels coated to avoid tube contaminations • Knob specially designed to reduce required tightening force • Rolling bearings for an smooth cutting wheel movement • Sold in retail packaging