The Rotary Magazine Assembly Tool Kit is designed to simplify maintenance on RugerŪ rotary magazines. Simple tool kit allows shooters to quickly and easily disassemble and assemble the magazine. A must have for shooters that want to keep their rotary magazines performing in top condition. Compact for easy transportation and storage. Made from glass filled nylon for durability. Kit includes a positioning post, spring tensioner and metal Allen Key. Comes in a Ruger-branded bag with carabiner to attach to your range bag. Made in the USA by TandemKross.