CST-400 prep tools available from Rojone (16/04/2009)... The new CST-400 prep tool, available from Rojone, is used with the LMR-400 low loss coaxial cables including standard LMR, DB, FR, PVC, LLPL and -75, and can also be used for the first strip step on LMR-400-Ultraflex. The CST-400 prep tool ...