Spoke Wrench 3.3mm

The 1630/2A is the no-frills version of the Pro Spoke Wrench 1630/2P. Same 3.3 mm four-flat engagement, same hardened-steel construction, same nipple-protection geometry. What's missing is the plastic-dipped handle: the 1630/2A has a bare steel grip.

For a workshop bench, the dipped handle of the 1630/2P is the right call; for a saddlebag, a tool roll, or a touring kit, the 1630/2A's compact and lighter form is the right call. The bare-handle version weighs less, takes less space in the kit, and pairs naturally with the Pocket Wheel Truing Tool 1753/6 for trail-side and adventure-ride truing.

The four-flat engagement is what carries between both versions; it's the geometry that protects the nipple from rounding, and it stays the same whether the wrench has a dipped handle or a bare one. If the wrench you need is the one you can fit in a seatpack, the 1630/2A is the right choice.

Compatibility

• Nipple sizes: 3.3 mm internal spoke nipples (within tolerance for 3.23 mm nipples).
• Engagement: four-flat.
• Wheels: factory wheels, lower-spec rim builds, and any 3.3 mm spoke-nipple setup.
• Companion: Pocket Wheel Truing Tool 1753/6 for trail-side use; the dipped-handle 1630/2P 3.3mm for bench work.

Specs

• Working size: 3.3 mm, four-flat engagement.
• Bare-steel handle (no plastic dip).
• Compact form factor for tool rolls, seatpacks, and touring kits.

Built in Zreče, Slovenia

Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The 1630/2A is the lightweight cousin of the bench-grade 1630/2P; same hardened steel, same engagement geometry, smaller pack space. A wheelbuilder's saddlebag spoke wrench should be the same engagement-quality as the bench wrench (otherwise it'll round a nipple at the worst possible time); the 1630/2A is the Unior answer.

Pro tip from our mechanics

Keep the bare-handle wrench in the pack, not in the parts drawer. A spoke wrench in a saddlebag is the wrench that's there when the wheel goes out of true on a ride; a spoke wrench in the bench drawer is a wrench that didn't come on the ride. The 1630/2A is small enough to live in the pack permanently; set it next to the Pocket Wheel Truing Tool and forget it until you need it. The full wheel-truing workflow is in How to true a bike wheel →