The Master Lock No. 1803TRI is Fortress Series Covered Laminated Steel Padlocks thet feature a 1-9/16in (40mm) laminated steel lock body, a 7/8in (22mm) tall, 13/16in (21mm) diameter case hardened steel shackle, a non-rekeyable 4-pin cylinder, and a thermoplastic cover for water resistance. The Fortress series products provides opening-price point padlocks for the price conscious consumers. The Fortress padlocks are backed by the same solid Master Lock Company support and limited lifetime warranty. Sold as 2 Sets and two different sets of keys.