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Park Tool SW-3 Bicycle Spoke Wrench
Our iconic spoke wrenches have been a mainstay of our product lineup since we introduced them over 40 years ago. With their simple design and professional quality, they're still the favorite of bike mechanics around the world. Each Park Tool SW-3 is made in the USA, and is precision-stamped, hardened and nickel plated for long service. Park Tool Spoke Wrenches are vinyl-dipped in one of four colors indicating the size at a glance.
The SW-3 is sized for 3.96mm (0.156") nipples. This size can be found on select Shimano wheels, hub-drive e-bikes, & wheels found on "heavy duty" bikes. Always measure to be sure.
SIZE MATTERS
Most square nipple sizes are within 1mm of each other, so a wrench that is too big may still seem like it fits. However, nipples are typically made of brass or aluminum. Both are a relatively soft material and can be easily damaged by the wrong sized spoke wrench (or poor-fitting off-brand wrenches).
MEASURE TWICE
The best method to determine the correct spoke wrench size is to use a caliper and measure the nipple across the wrench flats. Don't worry about the size of the spokes themselves - spoke gauge is not correlated to nipple size.
TOP TWO
For square nipples, there are several size possibilities, but the two most common are nominally 3.2mm (Park Tool SW-0) and 3.5mm (SW-2) when measured across the flats. Use the smallest wrench that fits on the nipple.
TRUSTED SINCE 1963
Since our origins in the back of a bike shop in 1963, it has been our sole mission to design and manufacture high-quality tools that empower mechanics and riders of all skill levels to service their bicycles. As with our other 500+ tools, our wheel truing tools are a product of our decades of experience and expertise in the industry, in the shop and on the trail.
CFPaul
Reviewed in the United States on October 11, 2023
Always works.
MikeByTheSea
Reviewed in the United States on July 8, 2022
Works on my fat tire ebike, Ariel Rider Xclass. Nice placement of the handle for easy use.
NOC
Reviewed in the United States on November 12, 2022
This is exactly what I was looking for to tune my ebike wheels.
Kindle Customer
Reviewed in the United States on August 13, 2021
Quality of the product is vey good, perfectly shaped for easy use,
Rather B. Golfing
Reviewed in the United States on June 29, 2021
I trust this brand to give me a reliable and easy to use tool. It has worked as expected.
Tyler Jackson
Reviewed in the United States on March 10, 2020
Worked great on my 2019 Radpower Radwagon
Jessica Voisinet
Reviewed in the United States on December 23, 2020
Cheap enough and feels well made. Easy to use and works well.
Gregory
Reviewed in the United States on March 24, 2013
The Park Tool spoke wrenches don't round spoke nipples like some of the cheaper ones. Needed a particular size for all the Neuvation wheels I have collected and this works. Easy on the hands and good feel when turning.
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