This is an upgrade kit that makes G1 Predaking taller. It adds thigh extensions and a waist extension for Razorclaw. The waist extension requires disassembly of the figure. There are also arm extensions for Razorclaw to improve his proportions. This is the second version of the parts and are considered BETA. Please order at your own risk. Assemble parts carefully, do not force and sand where needed. Feedback most welcome.