Whiteside 3004 Template Pattern Router Bit 1/2" Cutting Diameter 1" Cut Length 1/4" Shank 2 Flute

I love Whiteside router bits, but the collar lock screw will quickly detach from the collar as soon as you use it (I used this template router bit on a hardwood). Luckily, I ordered some spare collar lock srews. I own another Whiteside template bit, and it has the same problem. Make sure you apply loctite to the collar lock screw before using this bit.