An amazing element that allows one ball to give a boost to another ball. If these pictures aren't great enough, check out the true genius who created this. knexpert#10829476. Pics for the original version can be found here (last pics in Step 8).
Bio:I like to build things with K'NEX (mostly ball machines), play video games (Mario), and watch TV (stuff like Victorious and iCarly). I'm on YouTube more than I am here. So feel free to leave a comment...read more »