The Klein Tools 53701 Replacement Blades are designed for the Klein Tools Adjustable Hole Saw 53710. This unit comes with all the necessary components, including 2 blades, 1 pilot bit, 2 hex keys, 4 washers, 2 end screws, and 1 set screw. Users are provided with replacements that allow for smooth cuts ranging from 2 in. to 7 in. in drywall and ceiling tile. The integrated gearing mechanism of the Adjustable Hole Saw with auto-set arms ensure easy adjustment in 1/4 in. increments and keeps the pilot bit consistently centered for precise cutting.