BASIC INTRAOSSEOUS (IO) TRAINER - 5 PACK4005 4006 VATAs Basic Intraosseous Trainer gives you a simple, affordable option for learning and practicing IO insertions. The IO training model has a soft skin with thickness of 7mm, a cortical bone with thickness of 2. 5mm and marrow with thickness of 28mm. The realistic feel of skin and bone material allow for amazing realism right up to the drop in resistance felt when advancing past the cortical bone. The low price point makes it possible to