Sherni Hole Saw Kit for Wood- 16 Pieces 3/4’’-5’’ Full Set in Case with 1pcs Hex Key, 2pcs Mandrels and 1pcs Install Plate for PVC Board Plastic Plate Drilling Drywall and Soft Wood Rotary Bit Set  (16 Bits)

16PCS Hole Saw Kit Specifications: Material: Carbon Steel Cutting Depth: 1" (25 mm) Surface Treatment: Black Oxidation Hole Saw Sizes: 3/4''-5 (3/4 " (19mm), 7/8" (22mm), 1-1/8" (28mm), 1-1/4" (32mm), 1-1/2" (38mm), 1-3/4" (44mm), 2" (51mm), 2-1/2" (64mm), 3" (76mm), 3-1/2" (89mm), 4" (102mm), 5" (127mm) • Package Includes: • 12 x Carbon Steel Hole Saw • 2 x Mandrels • 1 x 2.5mm Hex Wrench Drill bit must be installed to drill relief holes to make saw work easier. It’s recommend using machines with drill speed less than or equal to 1000 rpm, which can prolong the life of the hole saw.