The Gear Alloy 737BM Challenger black milled wheel is available in 18 and 20 inch sizes. The Gear Alloy 737BM wheel is available in standard and lifted truck applications. The Gear 737BM Challenger is available for most Jeep,s trucks and SUV's. Free shipping on Gear Alloy 737BM Challenger wheels. Free lugs and locks included with the purchase of a set of 4 Gear Alloy 737BM wheels.