Irwin 4935560 vs. Makita D-45989

Let’s take a look at these two circular saw blades: the Irwin 4935560 and the Makita D-45989.

Features & Benefits

Size

Both blades are 7 1/4” in diameter and have a 5/8” arbor hole. The most common circular saws have a 5/8” arbor and take 7 1/4” blades. This means that both products are generally compatible with most saws. If you’re unsure, refer to the manual for your saw to verify what blade sizes your circular saw takes.

The 4935560 is 0.063” thick and has a 0.079” (thin) kerf. The D-45989 is 0.047” thick and has a 0.071” (thin) kerf. (The term “kerf” is the width of the cut that the blade makes in the material being cut.)

Teeth

Both saw blades have carbide teeth. The 4935560 has 68 teeth in an ATB configuration. The D-45989 has 24 teeth in an ATAF configuration.

Alternate top bevel (ATB) teeth have a bevel shape rather than being flat across. This shape lets them slice through wood as opposed to tearing out chunks, resulting in crosscuts with less tear-out. They do tend to be less durable than flat-top teeth.

Pros & Cons

Let’s take a look at some of the pluses and minuses of these products.

For the Irwin:

For the Makita:

Comparison Chart

Below is a full side-by-side comparison of these products’ specs. You can view comparisons of the Irwin 4935560 with other products

	Irwin 4935560	Makita D-45989
Brand	Irwin	Makita
Blade Diameter	7 1/4”	7 1/4”
Arbor Size	5/8”	5/8” (round)
Weight	0.8 lbs
Thickness	0.063”	0.047”
Kerf	0.079”	0.071”
Tooth Count	68	24
Tooth Config	ATB	ATAF
Tooth Material	carbide	carbide
Rake		20°
Expansion Slots
Pros	Cuts through multiple layers of thin steel easily Leaves smooth metal edges without tearing Durable, up to hundreds of cuts of thin steel	Value priced blade from a reputable brand Works well on framing and treated lumber
Cons	Dulls quickly on thicker steel than intended for	Less durable than more expensive blades Leaves fairly rough cut, mostly suitable for framing
	Check Price	Check Price