Monoblock Locks Offer the Largest Diameter Shackle Available for Padlocks and Are Often Used for Hard-to-Access Spaces and Often In Conjunction With a Chain. Our Mono Block Lock Section Includes the Abus 82/63, 82/70 & 82/90 Brass Mono Block Padlocks, as well as the 92/65 & 92/80 Monoblock Locks with Steel Jacket and Rekeyable Steel 93RK/100 Monoblock Padlocks.