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2.3 Chain Wheel
2.3.1 Chain Wheel appearance
：
（
as picture
）
2.3.2 Chain Wheel Model
：
42T single chain cover
2.3.3 Chain wheel basic parameter
Teeths
：
42 T
Shape
：
Concave with circular pattern
Color
：
black
2.4 Crank
2.4.1 Crank Appearance
：
（
as picture
）
2.4.2 Crank Model
：
TS1-170AA
2.4.3 Crank basic parameter
：
Length
：
170mm
Quality
：
6061
Color
：
black
*
Note: The direction of the left and right crank threads is different, and there is an
"L" mark on the left crank, an "R" mark on the right crank
