MT-RSR | 8240 | Twin Chuck Kit | 2 Chucks & 4 Backing Plates for Brake Lathes The MT-RSR 8240 Twin Chuck Kit offers a complete solution for machining hub-less drums and rotors, ideal for shops servicing up to 1-ton trucks. This kit streamlines brake lathe operations with two Quick Chucks and a variety of backing plates, enhancing efficiency and versatility. Key Features: Jaw Change Elimination: Designed for busy shops, eliminating the need for frequent jaw changes. Multi-Lathe Versatility: Perfect for automotive workshops with two or more brake lathes. Time-Saving Efficiency: Significantly reduces setup time, boosting productivity. Comprehensive Kit: Includes multiple chucks and backing plates for diverse applications. Heavy-Duty Performance: Capable of handling drums and rotors from light to medium-duty trucks. Kit Includes: Quick Chuck Adapter (Standard) Quick Chuck: 3-jaw chuck, 5" diameter. Standard Backing Plate: 5" diameter. Wrench: For secure and easy attachment. Quick Chuck Adapter (Trucks) Quick Chuck: 3-jaw chuck, 5" diameter with truck jaws. Large Backing Plate: 7.25" diameter. Wrench: For secure and easy attachment. Additional Backing Plates Toyota Backing Plate: 6.25" diameter. Small Backing Plate: 4.25" diameter.