No. 1 Laminated Steel Pin Tumbler Padlocks, 5/16" Dia, 15/16" L X 3/4" W

Features: Dual locking levers provide extra pry resistance | Hardened bottom plate for drill resistance | Top and bottom bumpers for greater scratch resistance | Thousands of key changes maximize key integrity | Proprietary rustproofing for longer life | 4 pin tumbler cylinder helps prevent picking