Hole saw AWTools AW49551, bi-metal cutting cup, weight 120 g

AWTools AW49551 is a bi-metal hole saw designed to create circular openings in a variety of building and installation materials. The cutting cup is constructed from alloy steel with a powder-coated finish and features HSS M3 bi-metal teeth that are laser welded for durability. Weighing 120 g, this lightweight hole saw is compatible with standard electric drills and impact drills when used with an appropriate arbor or adapter. The progressive tooth pitch supports fast, precise cutting and efficient chip removal, making it suitable for trade and maintenance tasks.

Advantages

The AWTools AW49551 combines a robust alloy-steel body and laser-welded HSS M3 bi-metal teeth to provide improved wear resistance and cutting life. Its progressive tooth pitch delivers rapid penetration and reduces clogging by promoting effective chip evacuation. The powder-coated finish protects the body from corrosion and wear during typical use. Compact weight and standard shank compatibility make it easy to handle and fit to common drill drives.

Suitable for

• Creating through holes for ventilation and ducting
• Installing sanitary and plumbing pipes
• Cutting openings for junction boxes and socket boxes
• Fitting lock sets and hardware in doors or panels
• Drilling holes for LED lighting and fixture installation

Key specifications

• Cutting cup material: alloy steel with powder-coated finish
• Cutting teeth: HSS M3 bi-metal, laser welded
• Tooth design: progressive tooth pitch for fast cutting and chip removal
• Compatibility: standard electric drills and impact drills with appropriate arbor
• Weight: 120 g
• Suitable materials: steel, cast iron, wood and wood-based materials, aluminum and non-ferrous metals, plastics, acrylic glass, plasterboard

How to use

Select a compatible arbor or adapter and secure the AWTools AW49551 hole saw to the drill according to the arbor manufacturer’s instructions. Mark the center of the hole on the workpiece and, if available, use a pilot bit to stabilize the cutter. Start drilling at low speed to establish the cutting position, then increase speed as appropriate for the material. Apply steady, moderate pressure and allow the teeth to cut without forcing; withdraw periodically to clear chips and prevent overheating. After cutting, remove the cup and clean the teeth and body of metal shavings or debris before storage.

Usage recommendations

For longer tool life and safer operation, use cutting fluid or lubricant when cutting metals, maintain moderate drill speed for plastics and non-ferrous metals, and wear appropriate personal protective equipment such as safety glasses and gloves. Avoid excessive side-loads on the hole saw and ensure the workpiece is securely clamped.