The Handlock R15 40x40 nickel security cylinder is a high-quality, durable product, designed to provide optimal protection at all times. With a 10-piston system and a lifespan of over 100,000 cycles, this cylinder offers a high level of security, with protection against anti-bumping, anti-drill, anti-break, anti-crowbar, anti-extraction, and anti-picking. It is also suitable for master keying, making it a versatile and functional option. It includes 5 spare keys with plastic heads, ensuring secure and convenient access. With a nickel finish and measuring 40x40mm, this cylinder is the ideal choice for those looking to protect their home or business effectively and durably.