BlueRocco, the CT and Rock are the new type of tool holders or chucks. Actually the Rock was developed by Ron Justice to replace the Quick Change chuck that came on the CW and CCW. It is a much better chuck, a lot less vibrations and makes the machine a lot quieter too. And it doesn't hang up like the old QC's did. The Rock also uses it's own collets (tool holder). The CT is the lastest chuck that CarveWright came out with. It is an entire spindle with a chuck like the rock but is all one piece. I run a rock chuck, I love it and wouldn't trade it for anything, well that is unless I upgraded to a version C machine. Hope this answere your question about the rock and CT, and this is my 2¢ worth IMHO.
CarverJerry
CarverJerry
ver. 1.188 Win 7- 64b with 6 GB ram @ 2.8Ghz and dual 1Tb hard drives. Rock Chuck & Ringneck vacuum system hooked up to a Harbor Freight large vacuum. Center line text, conforming vectors.