2pcs/Package JERRAY @ 3.175mm(1/8") shank x 17mm cutting length UP DOWN router bits Two Flutes Spiral HRC55 Solid Carbide End Mill Tool Cutters for CNC Router, Compression Wood End Mill Cutter Bits

I thought this was a great price on a double pack of compression bits, but instead of making my work easier, I actually had to redo the two pieces I cut with these or I would have spent all day with the wood putty and sander. I have never seen so much tear out in my life. I would avoid if you are using plywood (I was using Baltic Birch). maybe in solid wood they would do better but I didn't have time to waste ruining another piece of work so they went in the trash.

I use my CNC Router for my business. I gave these more economical bit a try. I could not be more satisfied. 3/4 laminated plywood3 passes like butter.

These compression bits are great!!! Cutting 5/8" Melamine in three passes at 120 IPM. Clean, sharp edges on both sides.

These bits work great. very little cleanup required.

Good clean cut, limited clean up required.

Very low quality bits. I figured I'd give them a shot, as I've had some really good luck with 'cheaper' chinese bits... these did not fall in to that same category. Cutting 3/8" MDF, they broke quickly. I cut intricate designs in MDF on a daily basis. I can put about 120 hours of cutting time on the Whiteside 1/8" down spiral bits that I normally use. These barely made it 120 seconds before snapping off.