Features: brand new and high quality High-quality Material: Use ultralight high-strength 7075 aluminium alloy with high quality CNC machined. Product Range: The ultralight high quality chain guide is round: 32T-40T. Chain Guide Specification: The type of the chain guide is ISCG-03/ ISCG-05. Easy to Install: The Chain Guide easy to assembling without removing your cranks. Prevents falling off: The chain guide can be used for pipes in the frame to prevent the chain from falling off and moving, without worrying about dropping the chain again and extending the life of the chain. Specifications: Material: Aluminum Alloy Color: Black/Red/Golden/Silver Package Weight: approx.65g Size: approx.68.3x67.9mm/2.69x2.67in Package Includes: 1Pc x Chain Guard 3Pcs x Long Bolts 3Pcs x Short Bolts 6Pcs x Screw Washers note: Please allow 1-3mm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!