Two sets of wheel chocks (1 set for each side) I made with 2 small load binders, 2 short pcs. of threaded rod, 2 eye bolts, 10 nuts, 8 washers, 2 small lock washers and 4 pcs. of 4"X4" treated wood cut at an angle to match tires. I've used these for years and they've never failed.
