MAKITA D-21808 Bi-Metal Hole Saw 5" (127 mm)

MAKITA D-21808 Bi-Metal Hole Saw 5" (127 mm)
Makita hole saw part number D-21808 is a large 127 mm or 5-inch hole saw in the Bi-Metal Hole Saw (BIM) series. This hole saw model is designed for heavy-duty and long-lasting use: Bi-Metal Material: The teeth are made of high-grade High-Speed Steel (HSS) for the sharpness and hardness required to cut metal, while the body is constructed from flexible, shatter-resistant alloy steel (Flexible Shatter-Resistant Steel Body), ensuring durability against breakage even under heavy-duty operation. Variable Pitch Teeth: The variable pitch tooth design (4/6 TPI) helps reduce vibration during drilling, especially when cutting large holes, resulting in smoother cuts, easy chip clearance, and extended hole saw life. Cutting Depth: The hole saw offers a standard working depth of approximately 40 mm to 42 mm.

Specifications
- Highly Durable and Flexible: Features a bi-metal construction with tough HSS teeth and a flexible body that is safe and shatter-resistant.
- High Cutting Performance: Variable pitch teeth ensure fast cutting, reduced vibration, and clean holes.
- Multi-Material Cutting: Designed for a wide variety of materials, from soft metals and wood to plastics.
- Ideal for Heavy-Duty Work: The large 127 mm size meets the demands for wide openings in construction and utility system installations.
Applications & Usage
- HVAC System Installation: Used to cut openings for air ducts, ventilation pipes, or large service access points.
- Electrical Systems: Cuts openings for large junction boxes, large electrical conduits, or cable passages.
- Woodworking and construction: Cutting holes for large recessed downlights, wall-mounted speakers, or pipe pass-throughs in timber framing and gypsum boards
- Metalworking: Drilling holes in sheet steel, aluminum, or brass/copper