Upgrade your brake lathe with the Red Knob #6854, a must-have for any professional mechanic. Designed specifically for AMMCO 3000, 4000, 7000, and 7700 models, this knob ensures precision and efficiency in your brake system maintenance tasks. Its robust construction guarantees durability and smooth operation, making it an indispensable tool in your workshop. The Red Knob is compatible with manufacturer part numbers 6854 and KB6854, ensuring a seamless fit for your equipment. Whether you’re working on a car or truck, this AMMCO-branded knob will help you achieve optimal results for your brake lathe operations. Trust in the quality and reliability that AMMCO is known for with this essential brake lathe accessory.