What is the difference between a B and a T rating for ice tools?
B (basic) rated ice tools are designed for less extreme use like glacier walking, use as a T-anchor, for ski mountaineering and for step cutting, etc. Tools with this rating have lower shaft strengths and the picks are not specially stress tested. Black Diamond offers the Venom, Raven Ultra, Raven, Raven with Grip, and Raven Pro with this rating. T (technical) rated tools are certified for extreme use, i.e. ice climbing, drytooling, and mixed climbing. Tools with this rating have stronger shafts and the picks undergo a special stress test. Black Diamond offers the Fusion, Cobra, Viper and Reactor ice tools with this rating.