The Centi I is a UK Legal Carry Keyring Knife from SOG.

Designed to go wherever you go, the Centi knives can easily be carried on any keychain or lanyard. The Centi I is a small and versatile knife made from quality stainless steel and designed to be carried on a key ring or stashed in your pocket. It features a slip joint design and 1.4-inch stainless steel blade in a simple design. This tiny tool is thinner than most car keys, but strong enough for light duty cutting tasks. Its full stainless steel construction make this a durable go-to tool. Keep it on you all the time and you'll find its usefulness for quick everyday tasks. It's there when you need it and out of the way when you don't.

CLOSED LENGTH 2"
PRODUCT WEIGHT 0.40 oz
BLADE LENGTH 1.4"
BLADE THICKNESS 0.05"
LOCKING MECHANISM Slip Joint
FINISH Hardcased Black
EDGE TYPE Straight
BLADE STEEL TYPE Stainless Steel
BLADE SHAPE Straight Back
HARDNESS Rc. 50-52