This Tamper is constructed of plastic that is BPA free and dishmachine safe when cleaned in the top rack of the dishwasher 1. The tamper compatible with VT standard 64 oz. container 2. Will not work with 32/48 oz container Package Included: 1 X blender tamper stick Length: 313mm(12.32") Submersible length: 238mm(9.37") Material: BPA-free plastic When blending thick ingredients, the blades may get stuck. If this happens, users can turn off the blender and use the accelerator tamper tool to stir the ingredients. Then they can continue blending. Handle doesn't bend so it won't let water and other materials getting inside the tamper and making it very easy to clean and keep sanitary. Won't break easily:Our Tamper doesn't touch the blade but it's long enough to tamp the food so it won't break easily. Note:Not use in hollow condition.