Photo 1 of M-Parts 1 Pair of Self-Adjusting 12-1/4" X 3-3/8" (12.25" X 3.375") Electric Trailer Brake Assemblies for 9,000/10,000 Lbs (9K/10K) Trailer Axles; 1 LH (77-1210-1) + 1 RH (77-1210-2)

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Photo 1 of M-Parts 1 Pair of Self-Adjusting 12-1/4" X 3-3/8" (12.25" X 3.375") Electric Trailer Brake Assemblies for 9,000/10,000 Lbs (9K/10K) Trailer Axles; 1 LH (77-1210-1) + 1 RH (77-1210-2)Photo 2 of M-Parts 1 Pair of Self-Adjusting 12-1/4" X 3-3/8" (12.25" X 3.375") Electric Trailer Brake Assemblies for 9,000/10,000 Lbs (9K/10K) Trailer Axles; 1 LH (77-1210-1) + 1 RH (77-1210-2)Photo 3 of M-Parts 1 Pair of Self-Adjusting 12-1/4" X 3-3/8" (12.25" X 3.375") Electric Trailer Brake Assemblies for 9,000/10,000 Lbs (9K/10K) Trailer Axles; 1 LH (77-1210-1) + 1 RH (77-1210-2)Photo 4 of M-Parts 1 Pair of Self-Adjusting 12-1/4" X 3-3/8" (12.25" X 3.375") Electric Trailer Brake Assemblies for 9,000/10,000 Lbs (9K/10K) Trailer Axles; 1 LH (77-1210-1) + 1 RH (77-1210-2)