What's in the box:

Bike Cycling Bicycle Chainring Folding Bike Chainwheel Round Chain Ring BCD 130MM 5 Bolts Chainring 53T / 45T (red)

Feature:
130mm BCD.
5 bolts chainring.
Compatible with single speed 6 / 7 / 8 / 9 / 10.
Suitable for folding bike.
7075-T6 aluminum alloy forged for optimal lightweight and strong strength.

Specification:
Material: AL7075-T6
Color: Red
Model: 53T disc
BCD: 130mm
Diameter:
45T disc: 195mm
53T disc: 225mm
45T(3) oval : 202mm
Weight: 80-110g / 2.8-3.9oz

Package list
1 * Chainring