This 12" x 2" trailer brake drum is designed for 5,200 lb, 6,000 lb, and 7,000 lb trailer axles with a 6‑lug, 6×5.5" bolt pattern. The drum comes as a complete kit for one wheel end, including: outer bearing (15123, 1.25" ID), inner bearing (25580, 1.75" ID), two grease seals (2.25" ID and 2.125" ID) to fit different spindle seal surfaces, six 1/2"-20 lug nuts, and a 2.44" EZ‑Lube dust cap with rubber plug. Compatible with Dexter, AL‑KO, Quality, AXXIS, and other axles in this weight class. The drum itself is sized for 12" electric brake assemblies (brakes not included). Always verify your axle rating, bolt pattern, and existing seal diameter before ordering. Sold individually – order two for a complete axle.