Impact Double. This does not affect the product's quality or performance. 9/10 Speed.
6 7 Speed Chain, Steel Carbon Carbon Bicycle Chain with Sensitive Winding Point Impact Double X Type of Bridge for Road Bikes
Bike Crankset for Ebike: 48T/52T Universal Bike Crankset Set Double Chain Cover 170mm Aluminium Alloy Arm for Single Speed and 6/7/8 Speeds Electric Bikes, Fat Tire Bike, Bicycles, Folding Bicycle
KIMISS Fit for Road Bike Crankset Hollow Integrated Crank Arm Set 172.5mm 42T Aluminum Alloy for Off-Road Use - Lightweight and Impact Resistant
BELLIFFY 10pcs Steel Bicycle Crankset Screws for Mountain Bikes Crank Arm Bolts and Bottom Bracket Fixing Hardware Corrosion-resistant Impact-resistant Replacement Accessories for Smooth
Gogogmee 10pcs Steel Bike Crank Arm Screws for Mountain Bicycle Crankset and Bottom Bracket Fixing Bolts Impact-resistant Crank Bolt for Quick Repair and Stable Cycling Performance
Bike Crankset Aluminum Alloy Impact Resistant Lightweight Hollow 32T Mountain Bike Crank Arm Set
