Build your own customisable blaster with the k 10xr fires up to 75 feetr set includes 94 knex pieces including rods and connectors plus special parts to create your blaster 1 blaster chamber 1 quick fit grip 1 preload ring and 5 foam dartsr combine with the mini cross for an awesome downloadable combo buildr compatible with the entire k force build and blast liner perfect for builders aged 8 and over