CURT Class 2 Trailer Hitch Bundle with Wiring for 1987-1993 Mazda B2600 - 12303 & 55304 This bundle contains CURT Hitch Number 12303 and Wiring Number 55304 Hitch Components: Hitch, pin & clip only; Wiring Type: Custom Vehicle-to-Trailer Wiring Harness 1-1/4 in. receiver tube opening Weight Carrying Capacity (WC): 3500 LB; Tongue Weight (TW): 300 LB Made in USA - Backed by limited lifetime warranty