racewill square u bolt kit for trailer axle leaf springs, trailer leaf spring black steel u bolts, for 2x2 axle - 4-3/4" long 4-3/4" long for 2x2 axle - 1 pack black is up for auction in Automotive. The current bid is $1.00, 96% below the $24.99 MSRP, in As Is condition. This auction has ended — similar items appear in live auctions regularly.