If anyone cares to know, the rockler mini carbide tool kit is $90 off at $129. SOOOOO tempting but due to applying for a job that would require moving from CA to Texas I decided against it. The only differences are tool length, handle size, and I think the shaft was a little bigger. Why do I say the "only" diff? They use the exact same cutters as the pen making set. If I upgrade carbide tools I'm gonna get something of fuller size with bigger cutters I think. I've got a acrylester painted and drying gonna glue it in the morning with some titebond poly glue and turn it tomorrow afternoon. Roughing it with the circle granted isn't the best option, but its as good a test as any.