The GripnGaffÂ® Jumbo Bag is designed for R8RT, R10RT, R12RT, R14RT, R16RT, R18RT MultiCart and the original RocknRoller with the red and gray color scheme. Made from the same awesomely sturdy military grade ballistic nylon, the Jumbo is 16 inches in diameter, compared to 12 inches for the other bags in our lineup. The Jumbo bag is the only bag in our lineup that does not use a hard plastic bottom, since it is designed to hold items that don't have sharp pointed ends. Everyone knows that loading in long, hard and often round objects on a cart is a pain. They don't stack well and if they are longer than the cart, they make getting into elevators and through doors difficult. This could be c-stands, tripods, light and speaker stands, draping hardware, pipes, fabric rolls, trade show setups, etc. The GripnGaffÂ® Bag solves all these problems with ease. It is light weight but sturdy enough to handle anything you can put in it (well, maybe not machetes, axes or running chain saws) but it certainly works with the gear used by shooters, gaffers, grips, audio techs, roadies and others in the business. It even has cutouts where you attach shelves to your multi-cart. Load your cart with all your other gear in boxes, crates, camera bags, and audio gear, then put your c-stands, tripods, boom poles, etc into the GripnGaffÂ® Bag and easily get into buildings, through doors and into and out of elevators. When you're done, simply fold it up and put it away. It will last for years of hard service. 28"Lx16"Diameter 13" handle sleeve. GripnGaff bags come in many models and each one is designed for use with a specific cart. Please take a moment to review your order to make sure you are getting the right one. Mis-orders are responsible for return shipping and reshipment of the correct bag. Check the RocknRoller comparison chart - https://rocknrollercart.com/pages/compare-rocknroller-multi-cart-models.