Mas Epoxies Pint Medium Hardener M/E30-516. Condition is New. Model: 30-516 BRAND: Endurance Technologies MAS EPOXIES MADE IN USA Condition is Brand New You Will Receive 1 ea Package Containing 15.98 Onces #30-516 MAS Medium Epoxy Hardener. Shipped with USPS First Class Package. RARE VINTAGE COLLECTIBLE SHIPS N 24 HOURS Packed By Our Award Winning Packaging And Shipping Department LIMITED AVAILABILITY Inventory Box #5035 Product Details 15.98 Onces Large Bottle Mas Medium Epoxy Hardener by Endurance Technologies.Medium Epoxy Hardener. After mixing resin and medium hardener, you have 30 minutes to get it out of the cup and approximately 4 hours of open working at 70F. Good ultraviolet stability. Excellent barrier coating. Cures in high humidity. Recommended for large surface coatings and laminations. Blendable with fast hardener for customized working and curing times. Mix with appropriate MAS resins in a 2 parts resin to 1 part hardener ratio. Specifications: Volume: 15.98 Onces Features: Carefully crafted to suit your specific boating needs Engineered to high standards High-grade design delivers extended lifespan Made with premium materials Guarantees proper performance