Hole Saw Set, 7Pcs Diamond Drill Bits with Hole Saw Guide Jig Fixture, 1-3.15 inch Coated Core Drill Bits, Adjustable Hole Saw Centering Locator Suction Holder for Glass,Ceramics,Tile;

Diamond Hole Saws:
Material: high quality steel, diamond dust coating
●Color: Silver
●Size: 26-80mm/1"-3.15" 26mm(1 inch), 30mm(1.18 inch), 40mm(1.5 inch), 50mm(2 inch),60mm(2.36 inch),70mm(2.76 inch) 80mm(3.15 inch)
●Quantity: 7 pcs

Hole Saw Guide:
Material: rubber base + plastic shell + steel
Minimum Drill Bit Dimension: 1/8"
Maximum Hole Saw Dimension: 3-1/4"

Two Fixing Modes Available:
Mode 1, Adjustable Plate Obverse Side: You can fix your hole saw with 4 bearing balls,for sizes up to 3-1/4 inches
Mode 2, Adjustable Plate Reverse Side: Place the plate reversely then remove one bearing ball to the bearing hole, you can fix your hole saw with 3 bearing balls,for sizes up to 1-3/4 inches

Warnings:
1.If you smell burning, back off! Either your speed is too high or the pressure you're applying is too much.You're drill bit should never be hot to the touch, not even warm.
2.Not for use on Concrete or for depths beyond about 1/2".
3.Water is required for lubrication when drilling.

Package Includes:
1 Pcs Hole Saw Guide Jig Fixture
7 Pcs Diamond Coated Drill Bit