Valor Fitness CA-2 Boxing Speed Bag Platform with Bag HIGH-QUALITY- 2 in. x 2 in. Frame with 1 inch 12-gauge Steel tubes hold the platform and frame together for maximum stability. Mounting brackets allow the user to mount the platform onto a wall. Cement Anchors and Wood Lage Bolts are provided. FASTER RETURN- Constructed with 1-inch thick MDF and reinforced with 2 Solid Steel Chrome tubes to allow striking energy to be transferred back into speed bag, minimizing vibration and optimizing rebound. 360-degree rotating swivel allows the added speed. ADJUSTABLE WORM DRIVE- Easy to adjust, Worm Drive accommodates all athletes by allowing each user to choose their desired height. Allows for a 13-inch adjustable range of motion. LOCKING SCREW NUTS- Four locking screw nuts on back of frame provide stability to prevent the platform from shaking while in use. Simply turn the locks to loosen and move platform to desired level with the wheel crank below the unit, then re-tighten. ADDITIONAL- Valor Fitness Speed Bags are built to fit our products. If using another bag, the CA-2 should accommodate most S/M speed bags. Warranty- 3-year frame, 1-year swivel, 1-year wheel crank.