Trimax is pleased to present the latest most secure trailer hasp lock on the market. It features a Fully Hardened, Ultra Secure 3/8" Diameter Internal Shackle, that Can't Be Cut! The Trimax designed Enlarged lock Opening fits and secures all trailer door hasps. The New Bullet is designed and manufactured from High Strength 6061 Aircraft Grade Aluminum that is powder coated to prevent corrosion. The new revolutionary design covers entire hasp and rivets for Max Security. It's key entry orientation resists internal corrosion. Designed for enclosed box trailers, trucks and high security hasps.