Trimax's New Solid Aluminum hockey puck lock is manufactured from one piece of Solid 6061 Aircraft Grade stock. It's great for gates, trucks, and heavy security hasps. Trimax designed enlarged lock opening covers and secures all trailer hasps. 3/8" diameter, fully hardened steel internal shackle, Can't be Cut! Thicker Body for greater strength. Weather resistant, No springs to rust or jam. Epoxy powder coating is virtually weatherproof and ensures years and years of corrosion protection. Available in 3 colors: Black, Red or Silver. The THPXLAL is Recommended to work with the Trimax THAPC2 Ultimate Security trailer door hasp (sold separately)