Clear scale, easy to read and use [Perfect Design]: Compass style, with a round knob handle, perfect for your palm The glass cutter is equipped with a strong suction cup to firmly hold the center while the blade cuts the circle [ for Apprentices and Professionals]: Glass round knife is designed for amateurs and professionals Perfect for cutting glass artwork, crafts and home use. Glass cutter with strong suction cup to keep center while the blade creates circular cuts Colour:As Shown Material:alloy Package Contents: 2 x Glass cutter (professional glass cutter x 1 + household glass cutter x 1) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.