K&rsquo;NEX K-FORCE &ndash; K-10V Building Set &ndash; 83 Pieces &ndash; Ages 8+ &ndash; Engineering Educational Toy BLASTING ACTION  Design, build, and customize your KNEX K-FORCE Blaster with this building set! This set contains 83 durable plastic pieces that connect together to form a striking blaster. PEAK PERFORMANCE  Design and build unique blasters using KNEX rods and connectors. No matter what your creation looks like, its parts will work together to deliver maximum performance. Darts fire up to 75 feet and special rod-locks have been added to ensure that the parts stay together, even in the heat of battle! INSTRUCTIONS INCLUDED  The KNEX K-FORCE Build and Blast K-10V Building Set has step-by-step building instructions. Combine with the K-FORCE Mini Cross Building Set and download instructions for an awesome, double-chambered combo build! ALTERNATE MODELS  Build different blasters using the 83 pieces of the KNEX K-FORCE Build and Blast K-10V Building Set. This set is also compatible with products from the entire K-FORCE Build and Blast line, letting you create blasters that are only limited by your imagination. STEAMagination  This is the connection of STEAM (science, technology, engineering, arts & math) with a childs natural curiosity and creativity, and it powers the fun of each and every KNEX building set. Building with KNEX puts children on a path to a fundamental understanding of STEAM / STEM subjects. CUSTOMIZABLE BLASTERS  K-FORCE Build and Blast is the only line of dart blasters that you design, build and fully customize! Specialized parts like quick fit grips and dart launching mechanisms combine with the K'NEX building system to create any blaster that you can imagine. Packaging may vary. COMMITMENT TO QUALITY  KNEX rods and connectors are responsibly made in America at a landfill-free, zero-waste green manufacturing facility in Hatfield, Pennsylvania. We test to the strictest quality and safety standards, ensuring that your child has a successful, trouble-free building experience. PARTS GUARANTEE  Broken part? Missing part? If you need a replacement for any reason, just give us a call! Well get you what you need so that your child can get back to building as soon as possible.