USC 23020 LS-12 LONG & STRONG
The preferred filler to use when repairing large rusted-out metal areas and cracked or shattered fiberglass to its original strength.
Contains extra long strands of chopped fiberglass that provide extra strong bonding power. No-sag formula lets you use Long 'N Strong in cracks, holes, edges, behind panels or any other difficult area that needs strong reinforcing. Rustproof and waterproof.
1 Quart With Blue Cream Hardener