Milwaukee 49-22-4143 HOLE DOZER™ Plumber’s Hole Saw Kit – 12 Piece Bi-Metal

The Milwaukee 49-22-4143 HOLE DOZER™ 12-Piece Plumber’s Hole Saw Kit is engineered for professional metal and multi-material cutting applications in plumbing, electrical, and mechanical trades. The kit includes bi-metal hole saws with an enhanced 3.5 TPI tooth geometry for extended life and improved cutting efficiency. Designed for field durability and productivity, the HOLE DOZER™ system integrates thermoset coating technology, improved chip ejection, and rapid plug removal through an advanced slot configuration optimized for repeated heavy-duty use.

Details

• Manufacturer: Milwaukee Tool
• Model Number: 49-22-4143
• Product Type: Bi-Metal Hole Saw Kit
• Kit Size: 12 Pieces
• Series: HOLE DOZER™
• Tooth Design: 3.5 TPI variable pitch, optimized for metal cutting
• Material Composition: Bi-Metal (high-speed steel teeth welded to alloy steel body)
• Cutting Applications: Metal, stainless steel, cast iron, PVC, plastic, wood, and composite materials
• Tooth Warranty: Lifetime Tooth Break Warranty
• Coating: Thermoset industrial coating to reduce friction and heat buildup
• Slot Design: ALL-ACCESS SLOTS for enhanced plug removal, pilot visibility, and chip ejection
• Tool Compatibility: Suitable for corded and cordless drills
• Power Optimization: 25% increased holes per charge (cordless performance optimization)
• Case Design: Reinforced polymer hard case with customizable peg layout
• Storage Features: Removable accessory box, interchangeable layout for hole saw and arbor configuration
• Latch Type: Heavy-duty mechanical latches with reinforced top and bottom grid
• Manufacturing Origin: Made in the USA

Technical Application

The 49-22-4143 HOLE DOZER™ Kit is designed for professional plumbing, mechanical, and installation work requiring precision holes through pipe, conduit, or structural materials. The 3.5 TPI variable-tooth design ensures optimized feed pressure and chip load for cutting through ferrous and non-ferrous metals. ALL-ACCESS slot geometry enables full-depth plug ejection without prying, while also improving pilot bit visibility for accurate placement in confined or overhead conditions. The thermoset coating enhances thermal stability and cutting efficiency during extended operation with cordless and corded power tools.

Specifications

• Kit Contents: 12 Bi-Metal Hole Saws with arbors and pilot bits
• Tooth Pitch: 3.5 TPI variable
• Material: Bi-Metal (M42 high-speed steel teeth)
• Coating: Thermoset, low-friction finish
• Performance: 25% more holes per charge with cordless tools
• Cutting Depth: Standard 1-5/8" (41 mm)
• Plug Removal: ALL-ACCESS SLOTS with open geometry
• Pilot Bit Type: Hardened steel, replaceable
• Storage Case: Reinforced hard case with removable accessory compartment
• Warranty: Lifetime Tooth Break Warranty
• Manufacturing Country: USA

Summary

The Milwaukee 49-22-4143 HOLE DOZER™ 12-Piece Plumber’s Hole Saw Kit delivers industrial-grade cutting performance with reinforced bi-metal construction and precision tooth design for extended service life. Featuring ALL-ACCESS slot technology for improved ejection and visibility, and a thermoset coating for reduced heat buildup, this kit is optimized for professional metal-cutting and installation operations where reliability and precision are required.