Park Tool

SBC-1 Spoke, Bearing, and Cotter Gauge

Spokes are the thin metal rods that connect the wheel hub to the rim of your bicycle's wheels. They play a crucial role in supporting the wheel's structure, ensuring it remains strong and stable while you ride. Properly maintained spokes can enhance your bike's performance and safety, making it essential to understand their function when considering bike maintenance or upgrades.

Ball bearings are small, round metal balls that reduce friction between moving parts in your bicycle, such as the wheel hubs and bottom bracket. By allowing these parts to move smoothly, ball bearings enhance your bike's efficiency and speed. Investing in high-quality ball bearings can lead to a noticeable improvement in your riding experience.

Crank cotters are components that secure the crank arms to the bottom bracket of your bicycle. They are essential for ensuring that your pedals function correctly and safely. If you're assembling or repairing your bike, understanding crank cotters is important, as they help maintain the integrity of your bike's drivetrain.

A gauge is a measuring tool that helps you determine the size of various bike components, such as spokes, ball bearings, and crank cotters. When selecting a gauge, look for one that is specifically designed for bicycle parts to ensure accurate measurements. This will help you find the right sizes for replacements or upgrades, ensuring a proper fit and optimal performance.

When working on bike repairs, it's important to choose the right drill bits for creating holes in materials like metal or wood. Look for high-speed steel (HSS) or cobalt drill bits, as they are durable and effective for metalwork. Understanding the sizes and types of drill bits will help you tackle various DIY projects related to your bike, ensuring you have the right tools for the job.

Yes, many gauges are versatile and can be used to measure both bike components and drill bits. However, ensure that the gauge you choose is suitable for the specific measurements you need. Using a multi-purpose gauge can save you time and effort, making it easier to select the right sizes for both your bike repairs and any DIY projects you undertake.