10 x hole saw drillfor making clean, precise holes in glass and ceramic tilesAllow 1-5mm error due to manual measurementMaterial: electroplated diamondGood performance and long lifeDiameter range: 6/8/10/12/15/16/18/20/22/30mmBrand newLength: 50mmThe color of the items in the photos displayed on the computer monitor may be slightly different because the monitors are not calibrated the sameUse a drill to work better. (not included)Quantity: 10 (1 hole saw drill per size)Production process: electroplating