Tackform DuraLock 20 Series 3.5" Arm with Dual 20mm Sockets
Warranty Information
Vendor warranty summary
Tackform Warranty
At a glance: Lifetime on metal parts, 3 years on plastic, 1 year on electronics
This is Tackform's warranty, not an NVMOS policy. We've summarized it in plain English to save you a search. The manufacturer's official terms always govern and can change without notice. Last reviewed on nvmos.com: October 4, 2026.
Coverage by product
| Product or component | Coverage |
|---|---|
| Metal parts | Lifetime |
| Plastic/ABS parts | 3 years |
| Electronics | 1 year |
- Keep your NVMOS order confirmation — proof of purchase is required.
What's covered
- Tackform mounts and their parts bought from Tackform or an authorized reseller
- Only the defective component is replaced, not the whole system
What's not covered
- Devices you attach (phones, GPS units, tablets)
- Abuse, misuse or exposure to extreme temperatures
- Normal wear and tear
- Modified or improperly used mounts
- Discontinued parts with no available replacement
How to make a Tackform warranty claim
- Email clear photos of the mount and the failed area
- Explain how and when it failed
- Include proof of purchase (order number, Amazon order or receipt) and your shipping address
- A small shipping charge applies based on part weight; international customers pay all shipping
Tackform contact: Email: support@tackform.com · Claim page / support
Bought it from NVMOS? Start with us.
Have your order number and a few photos of the issue ready, then call real humans at (920) 249-7744 or send us a message. We'll tell you whether the claim goes through us or straight to Tackform, and help it along either way.
Shop Tackform at NVMOS
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Disclaimer: The information on this page describes Tackform's own warranty policy. It is not a warranty offered by NVMOS (No Visible Means of Support LLC). Manufacturers update their terms at any time; we review these pages periodically, but the manufacturer's current official policy is the one that applies to your claim. Source: Tackform official warranty information. Last updated on nvmos.com: October 4, 2026. See our return policy for NVMOS's own terms.
About the brand
Tackform has built heavy-duty device mounts in Addison, Illinois since 2012. NVMOS carries their TRAXX dash brackets, 20 Series phone mounts (including MagSafe), tablet and monitor holders, CB mic holders, camera holders and bases for trucks, vans and off-road rigs where the phone needs to stay put.
Based in: Addison, Illinois · Founded: 2012 · Lead time: In-stock ships in 24–48 hrs
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Warranty terms are set by Tackform, not NVMOS, and can change. Bought from us? Call (920) 249-7744 and we'll handle the claim with the brand.
The DuraLock 20 Series 3.5" arm has a 20mm socket at each end. It measures 3.5" overall and 2.75" from ball center to ball center. Tackform makes shorter arms, but the dual-socket layout here gives the widest range of articulation for placing a device exactly where you want it.
It is part of Tackform's 20 Series, built around the 20mm ball and socket. It works with other 20mm products, and Tackform says its parts are tested for load capacity with a safety factor that other makers do not guarantee. A black knob is included, and the arm is compatible with Tackform's anodized billet aluminum DuraLock knobs if you want to match your vehicle.
Choose your accent kit color from the options on the listing: black, blue, green, orange, pink, purple, red or yellow.
Fitment
Universal, for 20mm ball-and-socket parts. It is not suitable for 25.4mm (1", B-size) balls.
Questions before you order?
Fitment questions are easier to settle before the box ships. Call or text Carl & Anton at (920) 249-7744 or use the chat — real humans in Sheboygan, Wisconsin, not a call center.
Specifications
Tackform DuraLock 20 Series 3.5" Arm with Dual 20mm Sockets FAQs
What does the color option change?
It sets the accent kit color on the listing. All colors use the same 3.5" arm with dual 20mm sockets.
Will it fit 1" B-size balls?
No. It is not suitable for 25.4mm (1") balls.
Why choose this over the 2" arm?
The longer dual-socket arm gives more articulation and reach. The 2" arm is for tighter spaces.
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