Features: The main body is made of high quality alloy steel. Professional for 360° rotating roller type glass for compass cutter can inject oil, which is for precision and . High hardness alloy cutter wheel is designed to cut for neat section with high working efficiency. Tips: 1. Add proper amount of kerosene before use for better effect. 2. Do not put the glass on the hard floor, because it is easy to be damaged. Specifications: Name:Glass Cutter suction cup Color: gold,silver, Material: alloy + rubber Diameter: 55mm,60mm Uses: tapper for glass, kitchen ventilator, air conditioner, .. Package Includes: 1 × Glass Cutter suction cup Note: Transition: 1cm =10mm =0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!