1.Clamping range: 4-80mm
2.Material:engineering plastic/sealed bearing.
3.Adjustment range: about 4-80 mm / 0.16-3.15inch''
4.Features:This suction cup are designed for glass and tiles even in small sizes and it is easy to attach to cooling systems rubber compressed air suction nozzle can be pulled to adjust size, and the four-wheel design is wearable and smooth, along the sliding force.
5.Usage: tile glass marble punch holder;
6.1x Adjustable 4-83mm Glass openings Locator (not include the drill bit)