They do what they have to. Stop. Just moved a 3 ton load with no trailer brakes and they definitely did their job. I am only taking off one star because they are very noisy and also produce a TON of brake dust.
Power supply 12V, 40A, 500W (Hongwei HW-12V-500W)
12 Review
Long-Lasting 4LIFETIMELINES PVF-Coated Steel Brake, Fuel, Transmission Line Tubing Coil - 3/8 X 25 Ft
11 Review
CASIO Collection Men AQ-S800W-1B quartz watch, alarm clock, stopwatch, countdown timer, waterproof, power reserve indicator, hand illumination, display illumination, black
13 Review
Oil filter MANN-FILTER W 914/2
27 Review