Features of the Yakima Lock-N-Load Platform J Directly to an existing roof racks crossbars using Lock-N-Load Crossbar Clamps, or directly to a timber line or sky line roof rack towers with the Lock-N-Load SL Adapter Designed and thoroughly tested in the rugged Australian Outback Yakima Off-Road Rated to 165-330 lbs Side-to-side slats act like crossbars for easily mounting most bike, kayak, ski mounts and more Integrated T-slots in every slat and outer frame, for simple and secure attachment of T-slot and Lock-N-Load accessories Engineered aluminum construction Features a textured black powder-coat finish for durability and style Six platform sizes ensure a perfect Fit on your vehicle for a customized look Attaches to nearly any roof rack with Lock-N-Load Crossbar Clamps Size platform requires 2 sets of Lock-N-Load Crossbar Clamps Mounts directly to Yakima sky line and timber line towers with the Lock-N-Load SL Adapter This size requires 2 sets of Lock-N-Load SL Adapter and 4 towers Full collection of new Lock-N-Load accessories available to compliment any adventure