This kit is used to attach the leaf springs the trailer axle.

This hot dipped galvanized kit is for single axle trailers with axles that are 2 inch x 2 inch.

This kit contains:

4x galvanized 5-hole plates

8x 1/2 inch diameter 2 1/16 inch wide  x 4 13/16 inch long galvanized u-bolts 

16x 1/2 inch galvanized nuts 

16x 1/2 inch galvanized lock washers