Jack Support Block. Manufactured by BAE in South Africa. Used on US military trucks HMMWV M998 CUCV M1008 M35 M939 HEMTT and all the others Save $$$$ here on this priced right jack support. Great for rough or soft terrain, measures approximately 11-1/2 inches square by 2-5/8″ thick. Bolted together like a butcher block with Grade 8.8 bolts. Looks to be rot-resistant tropical hardwood like ipe or mahogany. Our soldiers don’t carry cheap Chinese junk into battle; you shouldn’t either You are getting this at a great price, plus…. We ship QUICK 13245 R3A3