SpeTool Upcut Spiral Router Bits Extra Long (4 inch) with 1/2 Inch Shank , 1/2 Cutting Diameter Solid Carbide CNC Router Bits End Mill for Wood Mortises and Cutting Dadoes Carving

Works great

Cut a 60” round table top out of buscuited 2x8’s Cut down about 1/2” per pass. Smooth cut, crisp edge. 5-stars

Very impressed for the money

Clean smooth cut grooving in hard maple @ 23000 RPM. Good quality bit.

Absolutely loved this bit!

The bit is quite the beast. I am just a hobby woodworker and admittedly the bit is handling all that I throw at it. It may not hold up to extended mass production use. But for the purposes of routing out mortises, tenons and rabbets, it does a really good job!

Recommend as a value purchase. Cuts like a hot knife through butter!

Got this bit for a project that I needed to do a lot of mortise and tenons. Stayed sharp the whole time and worked great. Didnt dull at all, so I am assuming the longevity is good as well

We used this bit in a circle jig to cut 2 thick pieces of poplar. Worked very well and is still sharp after 12 hours of use.

I needed this to cut mortices in red oak for a KS bed, see footboard leg in photo. In the picture you can see how effortlessly it cut into one of the hidden screws holding the 2x4s together to make the legs, there was no visible damage to the bit after cutting into 2 screws it completed the 16 mortices easily. Cut was silky smooth no chatter, finish was very clean.