Features: Premium Quality: This chain checker is made of stainless steel material, polished surface for skid-resistant. Featured with hardness, wearable and durable, precision. Measuring Tool: Chain will be wear sprockets at an accelerated rate after long-time riding,this useful tool for quickly measuring the chain wearing degree. Multiple Functions: The multifuntional bicycle chain tool not only can be used as bike chain wear indicator, but also as a chain hook and measurement tool for disassembly and assembly of nuts, valve cores and extension rods. Precision Cut: Used precision laser cut technology to improve accuracy when measuring your chains wear, whilst also improving longevity. Portable to Carry: The small size but durable bicycle chain indicator, compatible with all chains. You can carry with it with you anywhere. Specifications: Name: Chain wear measuring ruler Material: Stainless steel Uses: Chain damage measurement, length measurement, screw diameter measurement, hook function for chain maintenance Net Weight: About 39g Features: Made of stainless steel, sandblasting process, three-stage measurement, well aware of chain loss. Notes:1. Due to the effects of light and shooting angle, the actual color of the item may slightly differ from the color shown on the picture.2. Due to manual measurement, please allow 1-3cm measuring deviation.Thank you for understanding! Include: 1 * Chain gauge