Features: 1. Made of high quality alloy steel with fine treatment and precision machining, sturdy and durable. 2. Smooth edge would not harm bike chain and good for smooth rotation of chain. 3. High tensile strength, good for temporary use or repair bike chain. 4. A necessary accessory for bike, 2 pairs connectors to meet your need. 5. Quick release link design, can be reused 3-5 times. Easy to install and remove. Specification: Material: alloy steel Color: Silver Model: 9 speed Size:20 x 6.5 x 5mm/0.7*0.2*0.19inch Package List: 1* Pairs of Bike Chain Connector Note: 1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 1、1.Made of high quality alloy steel with fine treatment and precision machining, sturdy and durable. 2、2.Smooth edge would not harm bike chain and good for smooth rotation of chain. 3、3.High tensile strength, good for temporary use or repair bike chain. 4、4.A necessary accessory for bike, 2 pairs connectors to meet your need. 5、5.Quick release link design, can be reused 3-5 times. Easy to install and remove.