Bolt Action Pen, MK I

June 16, 2022 2:47 pm Published by

The Hassler Instruments Bolt Action Pen is ideal for the watch enthusiast on the go. The mid body bolt action is used to deploy the ball point pen tip, and unscrew the pen end cap to access a mini spring bar tool equipped with a Swiss made Bergeon 6767-xx spring bar tip. Add this pen to your every day carry and you’ll always be ready to take a note or change your strap. Manually machined and hand finished to order in stainless steel or brass in a variety of finishes.  

The pen accepts widely available D1 pen refills and Bergeon 6767-xx spring bar tips. Each pen is discretely hand stamped with its serial number. Contact @hasslerinstruments on Instagram for more information.


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This post was written by Nelly Calhoun