Build a customizable blaster with 10-Shot Motorized Rapid Fire! The NEW Motorized Rapid Fire Chamber allows you to fire 10 darts as fast as you can pull the trigger! Each dart fires up to 75 feet. Load 10 darts at a time with the included dart clip. Set includes K'NEX rods and connectors plus special parts to create customized blasters: 1 motorized rapid fire blaster chamber, 1 10-dart clip, 10 foam darts and 1 quick fit grip. Build and rebuild by downloading instructions for 6 additional blasters and targets. Most models can be built one at a time. Compatible with the entire K-FORCE Build and Blast™ line. Ages 8+. Requires 2 "AA" batteries, not included.