SPECIFICATIONS: Libraton Mini Tubing Cutter is designed to cut Copper, Brass, Aluminum, Thin Steel and PVC Pipes with 3/16" to 1-1/8" ( 4-28mm ) Outer Diameter OD. GREAT FOR SMALL SPACE: This tube cutter is specially designed for small diameter tubes in restricted spaces, and is perfect for working in tight and confined spaces, such as air conditioner installation and vehicle repair. HIGH PERFORMANCE CUTTING BLADE: Blade of our pipe cutter is made of most durable and high quality Alloy Steel for quick and clean cut. Our copper cutter also comes with a deburring tool. STURDY: The copper tube cutter body is made of light weight and durable heavy duty alloy steel, 2 flare groove rollers for precision cuts operation, strong corrugated knob for comfortable stable operation. EASY TO OPERATE & AFTER-SALE SERVICE GUARANTEE: Rotate the knob to grip tube, revolve copper tubing cutter around the tube, tighten grip smoothly after each full circle until full cut. Please let us know if you have any problem with this copper tube cutter. Our service team promise to reply to any of your messages within 24h.