9Pcs M42 Bi-Metal Cobalt Hole Saw Set

Product Overview

This M42 bimetal hole saw with white ground teeth is a professional cutting tool designed for high-precision and heavy-duty drilling tasks. It features a diameter range of 19mm to 51mm (3/4" to 2") and a maximum working depth of 48mm (1-7/8"), perfectly meeting diverse drilling needs in industrial and DIY scenarios.

Crafted from premium M42 high-speed steel with 8% cobalt content—superior to conventional M2 steel—the hole saw boasts exceptional heat resistance, wear resistance, and toughness. The white grinding tooth process enhances tooth sharpness and surface finish, ensuring smoother cutting, reduced friction, and minimized heat accumulation during operation. Its bimetal structure combines the hardness of M42 steel teeth with the flexibility of a carbon steel body, effectively preventing tooth breakage and extending service life by over 50% compared to standard hole saws.

The progressive tooth design and 2X slanting slot structure optimize chip removal efficiency, avoiding chip clogging and improving cutting speed. Equipped with a high-precision M2 pilot drill bit and two hex shanks, the kit ensures accurate positioning, stable clamping, and compatibility with most drills. Each hole saw is clearly marked with both imperial and metric measurements for easy identification.

Package includes 9pcs M42 bimetal hole saws, 2 hex shanks, 1 M2 pilot drill bit, and a durable carrying case for organized storage. It is widely applicable to metal, hardwood, plywood, plastic, plasterboard, aluminum, and other materials, making it an ideal tool for carpenters, electricians, plumbers, and DIY enthusiasts.

Product Features

Made of professional high-speed steel M42 (not M2) with 8% cobalt, this hole saw ensures superior heat resistance of the teeth. The progressive tooth strip allows for high cutting performance and fast chip removal. It has a lifespan that is more than 50% longer and can drill various materials such as metal, hard wood, plastic, and plasterboard.

This set includes 9pcs of M42 Bi-metal hole saws with 2 hex shanks: 3/4" (19mm), 7/8" (22mm), 1" (25mm), 1-1/8" (29mm), 1-1/4'' (32mm), 1-3/8" (35mm), 1-1/2" (38mm), 1-3/4" (44mm), and 2" (51mm) to meet various needs. It also comes with a hex shank in sizes of both, a M2 Pilot Drill Bit, and a convenient carrying case to keep all the hole cutters organized. The maximum cutting depth is up to 1-7/8''(48 mm). Each hole saw is marked with both imperial and metric measurements.

The metal hole saw kit showcases a 2X slanting slot design, facilitating efficient plug removal and enhancing operational speed. The hex shank arbor is capable of accommodating metal hole saws of various sizes. The pilot drill bit, crafted from premium M2 high-speed steel, ensures precise positioning and rapid drilling for an extended service life.