Shattered Concepts Ruined trainer blade inserts made of a 3D printed TPU material. These flexible and durable materials resilient to warping from heat, damage from drops, and are easy to install with a snug fit. Perfect for giving your Ruined trainer a unique flare. A new sound, and even a new balance and flipping experience depending on which inserts you use and how many. This product is in a trial run phase, and will only be available in one color for now, and that is white. Ruined trainer is NOT included. Disclaimer: WARNING: SMALL PARTS AND CHOKING HAZARD - Children under 8 yrs can choke or suffocate on small parts. Keep away from young children. Shattered Concepts is not responsible for lost, stolen, or seized packages. The following product is a balisong (butterfly) knife trainer and not a real knife. The "blade" shown in the following pictures is merely dull and used to mimic the weight and feel of a real blade. Trainers are not weapons and are strictly made for recreational and educational purposes only.