Padlocks - Class 2 24840 - Snap lockingGreen stripes indicate Security Grade 3 to BS EN 12320. 24841 - Key lockingGreen stripes indicate Security Grade 3 to BS EN 12320. 24843 - Key locking extended shackleGreen stripes indicate Security Grade 3 to BS EN 12320. 24846 - Key locking 10mm dia. shackleGreen stripes indicate Security Grade 3 to BS EN 12320. 24849 - Key locking closed shackleGreen stripes indicate Security Grade 3 to BS EN 12320.