RISK Parts Mountain Bike Chain Measuring Tool Chain Gauge Caliper Bicycle Chain Wear Inspection Tool RL305

The RISK RL305 3-in-1 Chain Measuring Tool is a practical bicycle maintenance tool designed for checking chain wear, holding chains during repair, and measuring bolt size. Made from SUS304 stainless steel, it offers excellent durability, corrosion resistance, and long service life for home mechanics and bike workshops.

With a compact integrated design, the RL305 combines a chain wear checker, chain hook, and bolt measuring gauge into one lightweight tool. It helps riders quickly judge chain stretch levels at 0.5%, 0.75%, and 1%, making it easier to know when maintenance or chain replacement is needed.

The built-in ruler and bolt holes allow quick measurement of bolt length and common screw diameters, including M3, M4, M5, M6, M8, and M10. A hanging hole is also included for easy storage on a tool wall.

Key Benefits

• 3-in-1 Design
  Combines chain wear checking, chain holding, and bolt measuring in one tool.
• Accurate Chain Wear Detection
  Three-stage wear indicators: 0.5%, 0.75%, and 1%.
• Chain Hook Function
  Helps hold the chain during repair, cleaning, or installation.
• Bolt Measuring Function
  Measures common bolt diameters: M3 / M4 / M5 / M6 / M8 / M10.
• Built-in Ruler
  Includes centimeter scale for checking screw or small part length.
• SUS304 Stainless Steel
  Strong, corrosion-resistant, and suitable for long-term workshop use.
• CNC Finished Edges
  Laser-cut and CNC-finished for smoother edges and better handling.
• Easy Storage
  Hanging hole design allows convenient storage on a tool board or hook.

Suitable For

• Mountain bikes
• Road bikes
• Gravel bikes
• Hybrid bikes
• Folding bikes
• E-bikes with standard bicycle chains
• Home bike maintenance
• Professional bike workshops
• Bicycle repair tool kits

Notes

• Use the tool on a clean section of chain for better accuracy.
• Chain wear measurement is based on a 10-link sample section.
• If the 1% wear indicator fits into the chain, chain replacement is recommended.
• Measurement results may vary slightly due to chain type, use condition, or manual operation.
• Keep the tool dry after use to maintain best condition.

Product Details