The TLS Rocket Body is made up of a number of different sizes and a variety of colors making them a very versatile system for putting together weighted casting spinners. The shape of the premium powder coated lead bodies lends itself to being able to combine bodies or use them as singles. For detailed information sheets on how to put together size 3, 4, 5 and 6 weighted spinners using the Rocket Bodies click on the Products Updates tab on the online store homepage or click here: http://www.tlspin.com/Articles.asp?ID=255