12mm Square Corners Carbide Inserts, 12mm Length x 12mm Width x 2.2mm Thick, 35 Degree Cutting Angle, 4-Blade Straight Hole, Suitable for Replacing Helical Planer Cutter Heads, Pack of 10

This bit is really nice and does a fine job leveling hardwood / epoxy tables. The 4 stars for longevity and 3 stars for value and durability are just because of the fact that finding extra replacment blades is really difficult if not impossible. I am waiting on a new bit that I paid 3 times the money for but I know I can order replacment blades for anytime I need them, I hope the 12 x 12 x 1.5s I orderd with my new bit fit this one if so I will edit this review with the info if allowed.

Still works after many many hours. Cuts smooth and balanced. I haven't needed to change the blades yet after 10 hours of work. I've only had it a week, really pleased! Way better than the cheape cutters for flattening a slab.

Its worked well so far. I’ve flattened a couple slabs and changed the blades. All works as expected.

Excellent products for a fair price. Nice to not get gouged and receive top quality products couldn’t say how customer service is because I’ve never had a problem. Quit sure it’s excellent also.

Students have used it to flatten slabs and river tables. Cuts incredibly well. Have only used 5or 6 times so don't know how long it will last but so far so good! Great value, excellent performance so far.

Very sharp blades with an extra set plus extra screws. As edges full you can turn the blades to get a total of four new edges on each. An additional set means you get newly sharpened blades a total eight times.The stem and body seem to have been machined out of a single piece of steel, making me think there are no joints to weaken the structure. I like the half-inch shank. I feel like they're safer and don't heat up as quickly as quarter-inch ones.A robust and well-made router bit. Recommended.

I love the carbon steal blades that come on this bit. I have a sharpener that I will be using to sharpen the blades when I need to and love the fact that I am no longer going to have to buy new bits each time I mill a live edge board down. I have used other blades in the past and they usually last me around two to three slabs that I have done. This one should be my last one I buy. I did like the storage case that it showed for the extra blades in the pictures, however mine were just in a plastic bag. Not a game changer or anything. If you are looking for a new milling bit look no further and this one and give it a try.

Love how this came with extra blades and screws, which is awesome.It's very robust and easy to use. This is a durable bit, which I can see lasting a while.