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The RIDGID® Model HC-450 is engineered for continuous 1⁄4″ (6 mm) to 4 3⁄4″ (120 mm) hole cutting in and up to 8″ (203 mm) diameter steel unpressurized pipe. The built-in level ensures line up for multiple holes when branching lines using Mechanical T®, Vic-O-Let™ fittings or welded saddles. The HC-450 is ideal for mechanical, industrial maintenance and fire protection contractors since it cuts holes into a wide variety of pipe materials. No off-the-shelf drill-based hole cutter compares in performance or durability to the rugged purposed-built Model 450.


  • Engineered for continuous dry or oiled hole cutting.
  • Dual-side controls provide easy operation.
  • GFCI and a built-in breaker for operator protection.
  • Two carrying handles ease mounting and alignment.
  • Built-in level for multiple hole alignment.


Hole Cutting Capacity Up to 4 3/4″ (120 mm) (Sch 10, 40 and 80 Pipe Dia.)
Pipe Diameter Mounting Range 1 1/4″ to 8″
Motor Universal, 115V, 50-60Hz
Output Speed 110 RPM (no load)
Chuck Size 1/16” – 5/8”
Arbors up to 1⁄8” (3 mm) – 5/8” (16 mm)
Height 12 5/8″
Length 17″
Width 17″
Approved by CSA to CSA and UL standards, 115V/230V