34.9 To 28.6 31.8mm Adapter Bike Chain Stabilizer Chain Stabilize Bicycle Chain Guide MTB Bike

Label:Yes Size: 68.4*68.6*57.2mm(2.69*2.70*2.25in) Net weight: 97.4g Packing list:1pc chain stabilizer ,2pcs conversion pieces,3pcs set wrench Color: black/red Material: Aluminum Zinc Zinc Alloy Features:Used on the middle tube of the frame, it can effectively prevent the chain drop and chain jump Used for single-disc bicycle chainrings, Gospel of the Chongshan Downhill Party The original size of the middle tube is 34.9, and two sets of reducers are provided. 34.9 can be converted to a diameter of 28.6 or 31.8 to fit the diameter of the middle tube of 28.6 or 31.8. Dead fly bike frames are mostly 28.6/road bike frames are mostly 31.8 or 34.9/mountain bike frames are mostly 34.9