What's in the box:

Bike Cycling Bicycle Hollow Chainring Single Crank Wheel Folding Bike Crankwheel Crankset BCD 130MM 5 Holes Crankset

Hollow-out design really lighten the weight of the crankset, great for these riding enthusiasts.

Feature:
130mm BCD.
5 holes crankset.
Wide tooth alternate with narrow tooth for low chain falling possibility.
Hollow-out crankset really lightweight.
Suitable for folded bike.

Specification:
Material: AL7075-T6
Model: 50T / 52T / 54T / 56T / 58T (optional)
BCD: 130mm
Diameter:
50T: 208mm
52T:216mm
54T:224mm
56T:231mm
58T:242mm
Weight: 85-103g / 2.8-3.6oz
Package weight: 105-123g / 3.7-4.3oz

Package list
1 * Crankset