Sold as ONE Block. The Basic Non-skid Canoe Rooftop Carrier Block is best used in sets of four but can be purchased as singles for those who have lost one.

Made of high quality minicell foam. FOUR Car Top blocks provide simple and effective way to carry a canoe on most vehicles including those with a bare roof.

Use four of these blocks to make your own kayak carrier system. You will also need a set of load straps and the bow-stern tie-downs.

Dimensions: 4 inches wide x 6 inches long x 3 inches high.