The classic "pocket lock" used by messengers for the last two decades. This has been updated by Kryptonite and imitated by others but it's still the one.

• Kryptonite security levels: 1 (Low) - 10 (High)
• 13mm hardened Kryptonium steel shackle resists bolt cutters and leverage attacks
• 3 key-one lighted for nighttime use
• Anti-Theft Protection - $2,000

• Diameter:	13mm	Length:	3.25x5.5"/8.25x13.97cm
  Type:	Mini	Color:	Black/Orange
  Rating:	7 of 10	Bracket:	Included
  Shackle Type:	Mini