This Vitamix 2-piece lid is designed to replacement the one that originally came with your Vitamix blending system. It features a convenient 2-piece design consisting of an outer lid - made of highly durable and flexible thermoplastic rubber - and a plastic inner lid when, when removed, grants quick and easy access for a tamper to facilitate blending. This lid is intended for use with Vitamix 64 oz. standard blender jars.