Keep your drivetrain in top condition with this 3-in-1 bike chain wear checker tool. Designed for cyclists who demand accuracy and durability, this compact multi-functional tool helps you measure chain wear, hold chains in place during maintenance, and check bolt sizes and lengths. Made from laser-etched stainless steel, it offers long-lasting readability and corrosion resistance. The three-step wear scale (0.5%, 0.75%, 1%) allows you to identify when your chain is approaching or exceeding its wear limit, helping prevent costly damage to your cassette and chainrings. Whether you're a mountain biker, road cyclist, or bike mechanic, this lightweight chain gauge is an essential addition to your toolkit.

Features：

• Chain wear indicator with 0.5%, 0.75%, and 1% scales to assess elongation accurately

• Chain hook feature helps hold the chain in place during breaking, cleaning, or removal

• Bolt gauge for checking M3, M4, M5, and M6 thread sizes

• Integrated ruler measures bolt length precisely

• Laser-engraved scale – clear, wear-resistant markings that won't fade or peel

• Stainless steel construction – durable, rust-resistant, and precision-machined

• Lightweight and portable – only 40g, fits easily in your repair kit or saddlebag

• Suitable for mountain bikes, road bikes, e-bikes, and more

Specifications：

• Material: Stainless Steel

• Dimensions: 130mm × 50mm

• Weight: Approx. 40g

• Functions:

  • Chain wear checker (three-step)

  • Chain holding hook

  • Bolt thread gauge (M3–M6)

  • Bolt length ruler

Package Includes：

• 1 × Bike Chain Wear Checker Tool

Notes：

• Please allow 1–3 cm variation due to manual measurement.

• Slight colour differences may occur due to lighting and display settings.

• Replace your chain promptly if wear reaches 1% to avoid damaging your drivetrain components.