M50XDHC Features: -Disc lock.-Covered keyway for superior weather protection.-Tough-Cut octagonal boron carbide shackle.-Shrouded shackle to prevent bolt cutter attacks.-Reinforced body bumper for scratch resistance. Construction: -Stainless steel construction for maximum weather protection. Dimensions: -Dimensions: 6.2" H x 5.9" W x 1.5" D.