Cutting Range: High hardness alloy cutting wheel, easy to cut, with a round hole cutting range of diameter 13.5 - 60cm / 5.3 - 23.6. Function: This is a glass ceramic tile cutting machine for cutting glass into a precise circle, ideal for amateur and professional glass cutters. Suction Cup: This glass cutting machine has a fixed suction cup that holds the glass firmly, it stays in the center, while the cutting machine head marks the circle. Easy to Use: This glass cutting machine with oil tank, can automatically inject oil, easy to use. Set Clear Scales: The calibrated scales can help you accurately size the cutting holes and make it easier to work with.