Park Tool Spoke, Bearing and Cottergauge
Original price was: $42.99.$12.95Current price is: $12.95.
Price: $42.99 - $12.95
(as of May 14, 2026 07:28:19 UTC – Details)
Product description
Park Tool SBC-1 Bicycle Spoke, Bearing, and Cotter Gauge
This handy shop aid has remained more or less unchanged since we introduced it in the 1960s, and it’s still relevant today for any bike mechanic looking to measure a spoke, ball bearing or crank cotter. To use, just hang the head of the spoke in the oblong hole and read its length on the scale. Features 9 holes for easily determining the size of most common ball bearings and crank cotters. With both metric and fractional length markings, The SBC-1 is also handy as a general-purpose ruler. Anodized aluminum with embossed markings for easy reading and and a lifetime of use.
ALWAYS TRUE
If you’re measuring a spoke, chances are you’re going to need a spoke wrench in the near future. There are many different sizes and even shapes of spoke nipples, and having the correct wrench is important. Luckily, Park Tool offers a full range of spoke wrenches in virtually every size found on a bike. Here’s a small selection of our lineup of wrenches to help you stay true:
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Spoke Nipple Size
3.23mm (0.127″) 3.30mm (0.130″) 3.45mm (0.136″) 3.96mm (0.156″) 3.23mm (0.127″), 3.30mm (0.130″) & 3.45mm (0.136″)
Typical Applications
Higher-end (>800 dollar) bicycles Older (pre-1990s) American bicycles – not as common Department store bikes/low-to-midrange bikes Select Shimano wheels, hub-drive e-bikes, heavy duty bikes Most square bicycle spokes
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.
A convenient aid for confirming the size of common bicycle parts
Fit the head of the spoke in the oblong hole and read its length on the easy to read scale
Holes in the centre of the gauge are used for sizing ball bearings and cotter pins
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