The Replacement Blades and Bit for the Adjustable Hole Saw with Auto-Set Arms (Cat. No. 53710) come with all the necessary components, including 2 Blades, 1 pilot bit, 2 hex keys, 4 washers, 2 end screws, and 1 set screw. These replacements allow for smooth cuts ranging from 2 to 7-Inch (5.1 to 17.8 cm) in drywall and ceiling tile. The integrated gearing mechanism of the Adjustable Hole Saw with Auto-Set Arms ensures easy adjustment in 1/4-Inch (0.6 cm) increments and keeps the pilot bit consistently centered for precise cutting.Features The Adjustable Hole Saw with Auto-Set Arms provides smooth cuts from 2 to 7-Inches (5.1 to 17.8 cm) in drywall and ceiling tile Using the small hex key, remove and replace pilot bit set screw and pilot bit Using the large hex key, remove and replace end screw, washers, and blade Integrated Gears Replacement blades and bit for the Adjustable Hole Saw with Auto-Set Arms (Cat. No. 53710) Replacement kit comes with 2 blades, 1 pilot bit, 2 hex keys, 4 washers, 2 end screws and 1 set screw After replacing, ensure all screws are fully seated and snug-tight before using the Adjustable Hole Saw with Auto-Set Arms to cut drywall or ceiling tile Features integrated gears for easy blade adjustment and centered pilot bit Warnings Never use on or near live electrical circuits. Always wear approved eye protection. Always wear approved respiratory protection. Read and follow safety instructions in power tool owners manual. Use light pressure when cutting and hold the drill with both hands. For Use With: 53710 Adjustable Hole Saw with Auto-Set Arms Tip Type: Regular-Point Size: 3/16 in. Width: 0.19 in. Depth: 1 in. Overall Height: 2.52 in. (6.4 cm) Overall Length: 1 in. (2.5 cm) Shaft Length: 1.56 in. (4 cm) Overall Width: 0.19 in. (0.5 cm) Weight: 0.07 lbs Material: Steel DownloadsVideo DownloadSpec Sheet