Park Tool UK-1 Utility Knife

The UK-1 is a general purpose workshop utility knife and has a locking blade for extra safety

Pull the blade fully open and it will click into a locked position

The body of the knife has an indentation adjacent to the locking mechanism

At this point, push the locking mechanism away from the blade and push the knife blade closed

The UK-1 uses a standard utility knife blade

To change the blade, open the knife fully

Push the knurled knob above the blade, pushing from the logo side of the knife

Pull the blade and remove it

Reverse the process to install a new blade

The UK1 is for shop use only and not for resale

Covered by Park Tool's legendary limited lifetime warranty