The upper knob is designed to hold more easier and comfortable, and the extended knob is easy to open. 6mm diameter carbide cutter wheel cutting range: 3-15mm, quick cutting and efficient operation. Suitable for cutting glass, ceramic tile and mirror. A nice cutting tool in home building or decoration, and also a useful tool for DIY glass and ceramic process projects. The glass cutter is easy to hold and reduces wrist fatigue, letting you cut glass with little effort and gives you clean-cuts. Cutting Thickness: 3-15mm Rotating handle length: 85mm Cutter holder length: 95mm Handle length: 85mm Colour: random colors, don't accept the specified color Material: aluminum alloy + plastic Size: 184x128x45CM Package Contents: 1 * Glass Cutter Body 2 * Replacement Cutter Heads 4 * Spared-Feet 1 * Handle Only the above package content, other products are not included. Note: Light 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.