Dynamic Double Checker Brake Disc/Chain/Hook - Purple

This double checker from Dynamic is a compact precision tool designed for assessing bicycle chain wear and measuring whether a brake rotor has reached its minimum permitted thickness. Its innovative three-point measuring design accurately checks actual chain-pin wear without allowing roller wear to skew the results, providing a more reliable indication of when it's time to replace your chain. The checker is compatible with 7V to 13V chains, including SRAM Flattop, Shimano, and Campagnolo chains. With separate 0.5% and 0.75% wear indicators, selecting the appropriate replacement threshold for your drivetrain is a breeze. Brand-specific measuring slots enable quick checks of compatible SRAM, Shimano, Campagnolo, Magura, and Hope brake discs. An integrated chain hook holds two chain sections together, reducing derailleur tension while fitting or removing a quick link. Additionally, a built-in ruler offers an extra measuring function for both workshop and roadside use. Its laser-cut anodised aluminium construction ensures the tool remains compact, durable, and light enough to carry in your tool bag.

- Measures both bicycle chain wear and brake disc thickness
- Three-point design measures pin wear without roller interference
- Suitable for all common 7V to 13V bicycle chains
- Compatible with SRAM Flattop, Shimano, and Campagnolo chains
- 0.5% wear indicator for 11V, 12V, and 13V chains
- 0.75% wear indicator for 7V, 8V, 9V, and 10V chains
- Brake disc measuring slots for SRAM, Shimano, and Campagnolo
- Also checks compatible Magura and Hope brake rotors
- Integrated chain hook assists with quick-link installation
- Built-in ruler for quick workshop measurements
- Compact laser-cut anodised aluminium construction
- Helps prevent premature cassette and chainring wear

Specifications
Brand: Dynamic
Model: Double Checker
Type: Chain-wear and brake-disc-thickness gauge
Chain Compatibility: 7-13S
Chain-Wear Indicators: 0.5% & 0.75%
Integrated Chain Hook: Yes
Integrated Ruler: Yes
Weight: 22 g
Material: Anodised aluminium
Color: Dynamic Purple