The PowerArm Total Trainer is a full strength training system that is designed for all Position Players as well as Hitters. A Door Hinge Anchor encased in latex rubber (will not damage hinge) permits use year around, indoors or out. The Total Trainer includes: 3 Resistance Tubes (8 lbs., 10 lbs., and 12 lbs. of Resistance) - Official Size Baseball - Door Hinge/Post/Fence Anchor - Backpack - PowerArm Brochure with Instructions - PLUS you get the PowerArm Hitter that comes with a rubber-coated (will not damage bat) Bat Clamp and Spring Snap Link that slip over a player"s bat knob down to the barrel. The Clamp/Link is attached to one end of a Resistance Tube with the other end of the Tube attached to the Door Anchor, a post, or fence. This is the only training aid on the market that enables players to use their own bat while practicing the correct swing/plane and building arm strength and bat speed. If you purchase these two training systems separately, retail price is over $75.Players 8-12 years of age normally start with the green tube, players 13-14 start with the red tube, and players 15 and older start with the blue tube. Players with advanced body development may start with a more resistant tube. As strength increases players move up to the next color tube and once the blue tube is mastered, the next step is to add a second tube and finally all three tubes are used simultaneously.The perfect addition to every gear bag for every player, regardless of skill set.Carry the weight room in your bag!