2PCS Adjustable Bicycle Chain Tensioner - Durable Steel for BMX & MTB

• Floating pulley and spring adjustment device to achieve perfect chain tension.
• Made of high-end high-quality steel material, wear-resistant when in use.
• Light weight and small size: very light and easy to install.
• Very suitable for mountain bikes,bicycles,BMX,etc.
• Used in single-speed inverters for chain tensioners.

Specifications:
Size:54x26x7.5mm
Material:Steel
Weight:25g