Precision extruded, cut and drilled pure aluminium body, light and strong Rustfree 5 pin tumbler mechanism with 65/40 keyway Zinc plated brass lock mechanism prevents chemical corrosion Sealed lock body with cover seal, protects cylinder against water and dirt Shock absorbing vinyl case for all round protection, Nano plated steel alloy shackle helps make rusty shackles a thing of the past, Weight: 0.24 pounds, Manufacturer: ABUS