K'NEX K-Force K-20X Building Set Product Details Product Dimensions: 16 x 2 x 9 inches ; 1.2 pounds Shipping Weight: 1.2 pounds Domestic Shipping: Item can be shipped within U.S. International Shipping: This item can be shipped to select countries outside of the U.S. Learn More Origin: USA Item model number: 47524 Our recommended age: 8 months - 11 years Manufacturer recommended age: 8 - 11 years 5 Foam Darts 1 Blaster Chamber 2 Skull Dart Holders and 1 Quick Fit Grip 1 Preload Ring Downloadable Instructions for 3 custom Alternate blasters and buildable targets Build 4 different blaster and target models in one set with the K-20X! Fires up to 75 feet! Set includes K'NEX rods and connectors plus special parts to create different blasters: 1 blaster chamber, 2 skull dart holders, 1 quick fit grip, 1 preload ring and 5 foam darts. In addition to the main K-20X model, you can download instructions for 3 alternate blasters and buildable targets. Compatible with the entire K-FORCE Build and Blast line. Ages 8+.