






Last Manner x Hassler Instruments Spring Bar Tool — Brass & Ultem
A limited Last Manner x Hassler spring bar tool, machined from black Ultem 1000 and brass for a refined addition to any watch collection.
Complimentary U.S. Shipping $100+ | International $350+
This extremely limited Last Manner collaborative edition is machined from black Ultem 1000 and brass, giving Hassler’s precision spring bar tool a darker, more formal presence.
The black Ultem brings a refined, almost fountain-pen-like character to the design, while the brass adds warmth, weight, and contrast. The end cap features the signature Last Manner logo, marking this as a special collaborative release.
Each tool is marked for authenticity with “HASSLER” on the front of the pocket clip and individually numbered on the inside of the clip.
A serious tool for watch collectors, strap changers, and anyone who appreciates purpose-built precision in a beautiful form.
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Extremely limited Last Manner edition.
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Tool body machined from solid Black Ultem 1000 with machined solid brass hardware for smooth operation and excellent stability.*
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Includes replaceable Bergeon Fork, Fine: 6767-AF on the tip.
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Includes replaceable Bergeon Pin, Fine: 6767-BF under the screw cap.
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Bolt action protects the spring bar tip.
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Individually numbered.
- Made in the USA.
Dimensions: ~5.5" (long) x 3/8" (diameter)
Want to know more?
Ultem 1000 is a high-strength plastic resin known for its exceptional mechanical properties, making it ideal for demanding applications. It offers excellent heat resistance, maintaining its structural integrity even at elevated temperatures, and has remarkable resistance to cracking and environmental stress.
Its unique combination of strength and durability, coupled with lightweight characteristics, makes it a preferred material in industries such as aerospace, medical devices, and luxury goods. Additionally, Ultem 1000 exhibits excellent chemical resistance, dimensional stability, and insulation properties, further enhancing its versatility.
Each tool is made in small batches and are normally only available directly from HASSLER INSTRUMENTS thru a waitlist/pre-order process with lengthy lead times. The Last Manner collaborative editions will allow you to immediately buy one when they are available in the shop.
We ship using USPS and UPS, depending on the destination and the products ordered. All shipments include tracking and up to $200 of insurance.
Complimentary Shipping Thresholds:
- USPS Ground Advantage (U.S.): Complimentary on orders over $100.00.
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UPS International: Complimentary on orders over $350.00.
- Please note: Duties, taxes, and import fees may apply and are the responsibility of the recipient.
Shipping Times:
- Most items ship within one business day (Monday to Friday, excluding holidays).
- Orders placed by 2 PM Pacific Time often ship the same day.
Additional Notes:
- Fine art pieces valued over $500 ship separately via complimentary UPS Expedited insured service with adult signature required. Split shipments will be dispatched simultaneously.
- While we offer insurance on your shipments, once a package is marked “delivered,” insurance no longer covers theft or loss. Please deliver to secure locations or ensuring someone is available to receive your package.
- Shipping costs are non-refundable.
International Orders:
- For international orders, customs duties, taxes, and fees may apply. These are determined by your country and are the responsibility of the recipient. Items rejected or seized by customs due to import restrictions are not the responsibility of Last Manner.
- We do not ship knives internationally.
- We ship UPS only.
For our full shipping policy, please see shipping policies.
Returns are accepted within 30 days of receipt of your order, provided the merchandise is in its new, unused condition and includes the original packaging. Items that show signs of use, arrive without the original packaging, or received after the 30-day period will not be accepted.
Exceptions:
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Lighters: We cannot accept returns for lighters that have been filled with fluid.
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Brass/Copper/Bronze Products: Items that have had their vacuum seal opened or have been handled and exposed to oxidation are considered used and are not eligible for return.
- Art, Vintage & Gift Cards: Photographs, posters, gift cards, vintage artwork, vintage items, and "Bygone Goods" products are final sale.
Refunds to the original payment method will incur a flat $5 restocking fee, which will be deducted from your refund. Returns for store credit or exchanges are not subject to this fee.
For our full return policy, please see return policies.
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Last Manner Works
Last Manner Works is our in-house label for products designed and developed by Last Manner — whether built in partnership with trusted makers or produced entirely under our direction. Every Last Manner Works piece bears our mark because we had a direct hand in its creation: the brief, the materials, the details. These aren't off-the-shelf products with a logo added. They're built from the ground up to reflect what Last Manner stands for.


Hassler Instruments
Founded by Tom Bushey in St. Paul, Minnesota, Hassler Instruments is named after Ferdinand Hassler — the Swiss-American mathematician and surveyor appointed as the first Superintendent of the U.S. Coast Survey in 1816, renowned for designing the precision instruments he used in the field. That same spirit of purposeful, hands-on instrument making lives in every Hassler tool today. Each piece is made to order on manually operated machine tools and finished by hand in the St. Paul workshop.
For a deeper look...
A luxury tool for your luxury watch: Hassler Instruments
A luxury tool for your luxury watch, Hassler Instruments combines Swiss-grade precision with minimalist elegance. Designed for discerning collectors, each tool is crafted to elevate the experience of strap changes and watch maintenance — transforming routine care into a refined ritual.





