Premium Weight Folding Bike Chain Tensioner for Brompton - Speed Change & Chain Stability - Aluminum Alloy Single to 6 Speed Converter with Rear Derailleur Pulley Wheel - Easy - Blue

Description: - Made of aluminum alloy material, corrosion proof, ultralight but high strength - To provide a simple, effective and adjustable way to tension chain and speed change - for single speed to 6 speed, for hanger dropout frame - Rear Derailleur Mount, Dual wheel guide wheels and built-in spring keeps chain stable and never dropping - Fit for BROMPTON Folding Bikes, asy to install and use.Specification: - Material: Aluminum Alloy - Size: 16.5x6cm/6.50x2.36 inchPackage Includes:1 Piece Bike Chain Guide Tensioner

• Ultralight and corrosion-proof aluminum alloy material ensures high strength and durability
• Adjustable tension chain and speed change for hanger dropout frames, suitable for single to 6 speed bikes
• Dual wheel guide wheels and built-in spring keep the chain stable and prevent it from dropping
• Designed for BROMPTON Folding Bikes, easy to install and use with precise chain adjustment
• Compact size of 16.5x6cm/6.50x2.36 inch for convenient portability on the go