🚛 Drive with Confidence: Unleash the Power of Precision Braking! Engineered with 9 gauge steel and advanced powder coating for superior corrosion resistance. Long stroke design ensures optimal braking efficiency for heavy-duty applications. Crafted from high-quality rubber, resilient to extreme temperatures for reliable operation. Enjoy a 1-Year Unlimited Mile Warranty, ensuring your investment is protected. Double O-ring center seal guarantees a leak-proof experience, extending the lifespan. Stroke Length: 3" Double O-ring Seal Actuator Type: 3030 The Torque 2 Pack of 30/30 Square Bosses Air Brake Chamber is designed for semi-truck trailers, featuring a long stroke of 3 inches and compatibility with various OEM parts. Built with advanced materials and technology, it promises durability, efficiency, and a 1-year unlimited mile warranty for peace of mind.