Specification Brand : Aexit BulletPoint1 : Cutting Diameter: 40mm/1.57"; Product Name: Glass Hole Saw BulletPoint2 : Material: Metal, Diamond Particles; Package Content: 1 x Glass Hole Saw BulletPoint3 : Weight: 62g; Shank Size: 10mm/ 0.4" BulletPoint4 : Total Length: 55mm / 2.2"; Main Color: Silver Tone BulletPoint5 : Side Hole Size: 16 x 7mm/0.63" x 0.28"(L*W) Color : Silver ItemName : Aexit Ceramic Tile Hole Saws & Accessories Diamond Coated Drilling Glass Hole Saw 40mm Cutting Dia Hole Saw Sets 10mm Shank ItemTypeKeyword : hole-saw-sets Manufacturer : Aexit Material : Ceramic,Glass,Metal ModelNumber : modle PartNumber : f190412ae040457 ProductDescription : Silver tone, 40mm Cutting Diameter, diamond particles, Glass Hole Saw. The diamond coating on these saws give superior performance and life. The Hole Saw Tool is perfect for making and accurate hole on glass , tile or ceramic . Works better with a electric drll(here is not included). It have 4 holes on the side. ProductSiteLaunchDate : 2018-09-28T02:32:59.490Z UnitCount : 1