C.E. Smith 1-1/2in Square Axle Tie Plate Kit - This kit has everything you need to mount fresh springs to a fresh axle. Features: Kit for a 1-1/2in square axle 2 galvanized tie plates 3.5in x 3in -Smith P/N 20022G 4 yellow zinc plated u-bolts 3/8-16x2in (1-5/8in inner)x3-3/8in -Smith P/N 22003ZY 8 zinc plated nuts and lock washers 3/8in-16