The new PL321/PLLW321T padlock provides high-security features for all critical infrastructure applications as a mechanical or electromechanical Protec2 CLIQ padlock. Part of the Super Weather Proof SWP CLIQ series, it carries an IP68 rating so it’s impervious to water and dust and withstands extreme temperatures. This model features a one-quarter diameter shackle, making it unique and powerful.