Bafang BBSHD Chain Wheel Chain Ring 42T Aluminium Alloy

Specification of 42T Chainwheel:
Material: Aluminium Alloy 6061 T6
Suitable Motor: Bafang Mid-drive BBSHD
Teeth Quantity: 42T (Positive and Negative Tooth Design)
Max Diameter: 175mm
Max Thickness: 24.3mm
Offset: 20.5mm
Speed:  6/7/8/9/10/11 speed chain 
Surface Treatment: Black Anodized/ Red Anodized/ Blue Anodized