Bi-metal and carbide tipped hole saws.
Hole Saw Kits
These hole saw kits contain the most common sizes needed on the jobsite, held in a durable, custom fit, plastic case. They each contain pilot bits, a small arbor with 1/4″ shank, and a large arbor with 7/16″ shank.
The Electrician’s Kit includes:
7/8″, 1-1/8″, 1-3/8″, 1-3/4″, 2″, 2-1/2″ hole saws, and small & large arbors with pilot bits.
The Plumber’s Kit includes:
3/4″, 7/8″, 1-1/8″, 1-1/2″, 1-3/4″, 2-1/4″ hole saws, and small and large arbors with pilot bits.
(Case color and design may vary.)
Pilot Drill Bits for Hole Saw Arbors
As you use your hole saw blades, the pilot bit in the arbor will eventually wear out. Rather than buying a full replacement arbor, you can just buy a new pilot bit and replace the old bit.
These pilot bits are made from High Speed Steel (HSS), and fit all hole saw arbors. They are available in lengths of 3″ and 4″. There is even a carbide tipped 4″ bit available if you need extra cutting power.
Arbors for Hole Saws, Mag-Bit
These arbors attach to various sizes of hole saws, and have shanks for hex and SDS drivers. They are made by Mag-Bit, but match industry standard hole saws. Each arbor can attach to multiple sizes of hole saw, with the smallest starting at 9/16″ and going up to 1-3/16″.
The larger size starts at 1-1/4″, and runs up to the largest at 6″. This size has two posts that fit into matching holes in the back plate of the saw body, so ensure that the saw can’t spin around the arbor as you cut the hole.
In addition to that choice, an arbor may have a shank that is 1/4″, 3/8″, or 7/16″ hex, or SDS.
Bi-Metal Hole Saws
Bi-Metal hole saws are constructed using both High Speed Steel (HSS) for its strength, and spring steel for its flexibility. This allows fast cutting in a wide range of materials, with less breakage from tough jobs.
These hole saws also have a 4/6 variable pitch tooth combination to reduce vibration, and a deep cup for improved chip removal.
Self-Feed Hole Saw
Designed for high speed cutting of large holes for pipe or conduit placement. Multiple outlining spurs quickly bore precise holes without shipping or splintering. Ideal for plumbers, electricians, carpenters, or anyone who needs to drill large holes in wood.
Paddle Bits, Individual
Paddle bits, also called spade bits, have a wide, flat blade. They are commonly used by tradesmen such as electricians and plumbers for drilling holes through studs in walls for running wiring or pipes (auger bits and hole saws are also used for this), but they also have a place in the woodshop for drilling on fine woodworking projects.
An extension kit is available for the extreme jobs. It includes a 12″ extension shaft, and a bent-hex tool to securely tighten the retaining screws when the paddle bit is installed. (See image.)
Mag-Bit 624 Hole Saws
Cuts holes in wood, plastic, or any machinable metal, including nail-embedded wood, plywood, pipe, stainless steel etc. 9/16″ – 6″ – 624 HOLE SAWS – BI-METAL VARI-PITCH 4/6 TPI, 1-3/4″ DEPTH
When drilling metals, use a cutting compound such as MAG-LUBE concentrated cutting fluid.
Spade Drill Bits
Spade bits are used for rough boring in wood. Spade bits are flat, with a centering point and two cutters. The cutters are often equipped with spurs in an attempt to ensure a cleaner hole. Intended for high speed use, they are used with electric hand drills. Spade bits are also sometimes referred to as “paddle bits”. Available in 1/4″ – 1-1/2″.