Protective, scientifically designed structure fits wheel hubs to shield the tire bead from strain and damage, preserving casings for successful retreading. Hubfriendly design with wide compatibility: suitable for most radial and biasply tires on passenger cars, light trucks, and many SUVs; manual tire changer that protects wheels during mounting and demounting. Efficient and easy to use: eliminates the need to lift rims to remove the bottom bead; this single tool handles demounting. Practical use scenarios: Auto shops demounting stubborn tires and prepping casings for retreading on cars and light trucks. Fleet maintenance with mixed tire types (radial and bias ply) across SUVs and vans. Tire service centers dealing with stubborn tires on trucks without heavy lifting equipment. Key benefits: reduces bead damage, extends casing life, saves time and labor, and supports broad tire compatibility.