Get ready for slithering fun with the Cobra's Coil Roller Coaster Building Set from K'NEX!</br>201 K'NEX parts and pieces</br>Second model?? Rattlesnake Rush?? instructions found online</br>Perfect for builders ages 7 and up</br></br>Product Description</br></br>Get ready for slithering fun with the Cobra's Coil Roller Coaster Building Set from K'NEX! You can build with over 200 K'NEX parts & pieces including rods?? connectors and track to create this slingshot powered serpent that sends the coaster car hurtling through over 9 feet of heart-pounding thrills! Then?? download exclusive instructions to build an incredible second model?? the Rattlesnake Rush! Recommended for ages 7+</br><br/>http://www.amazon.com/gp/product/B019F2SEQ0