This bundle includes 2 items: (1) Green Touch Xtreme Pro Series XC104 Four Position Trimmer Rack with (1) Pair of CX111 Mounting Blocks. The Xtreme Pro Series XC104 Trimmer Rack will secure up to 4 string trimmers firmly in place in an open or enclosed trailer. It is designed to provide maximum security for weed trimmers or weed whackers, quickly locking all equipment at the same time using a simple one lock design. Xtreme Pro Series Trimmer Racks are the worlds fastest and most secure trimmer racks available, capable of eliminating rolling, fuel spills, engine flooding, shaft wear, and helping deter the theft of your trimmers. Free up space in the back of your trailer, prevent unnecessary damage, and deter the theft of your trimmers. New Improvements made to the Xtreme Pro Series Racks include a new neon green color, aluminum engine support kits integrated into the racks, base mount supports, and a keyed padlock. Also included are mounts for open and enclosed trailers and mounting hardware. The included pair of CX111 Aluminum Mounting Blocks can be used as replacements if you require more blocks for your trimmer rack (the rack already comes with mounting blocks on them).