ADJUST-O-MATIC™ Tube Cutter. Tube Cutter with Ratchet feed for 3/8” to 2-5/8” (10 mm to 66 mm) O.D. tubing. Ratchet feed mechanism speeds up cutting operation. Extra wide rollers with flare cut-off groove stabilize tubing. Spare cutting wheel included under handle cap. Enclosed screw-type feed mechanism; lightweight aluminum alloy body.