ITEM NAME:40cm Glass Cutter 6 Wheel compasses Circular Cutting With Suction Cup Circle FT the dimension diameter annotation scale of compasses cutter is the diameter of scale, but it 's a long rod radius size, such as 40# rod length is 20cm, the scale is 40cm, please note that 40# cutting diameter 40cm, 60# cutting diameter is 60cm. Specifications: Diameter:4cm Size:24x4x7.5cm(L x W x H) Material:alloy rubber Features: 1.Wear-resistant sucker lock, durable. 2.The scale is clear and the plan is accurate. 3.Equipped with six high hardness alloy knife wheel, cutting sharp, long service life. 4.The ball shaped movable handle , anti-slip. Note: if you're the first operating, the glass from the window down, in the carton above the operation, do not put the glass on the hard floor, easy to damage glass. Package include: 1x Compasses Circle Circular Cutter with Suction Cup.1x Compasses Circle Circular Cutter with Suction Cup. Equipped with six high hardness alloy knife wheel, cutting sharp, long service life. The ball shaped movable handle, anti-slip.