This is a Practical Tools 16-piece hole saw set.
Set Contents: The kit includes 16 pieces, including various hole saw blades, mandrels, and a carrying case.
Material Compatibility: The hole saws are suitable for use with wood, alloys, and thin sheet metal.
Sizes Included: The set features a range of sizes from 3/4" (19mm) up to 5" (127mm).
Application: Hole saws are used to cut clean, large-diameter holes efficiently in various workpieces.