31*2mm plastic wheel is a DIY small wheel, made of plastic, with a hole diameter of 1.9mm, which can be directly matched to a 2mm axle
Diameter: 31mm
Thickness: 11mm
Axle hole: 1.9mm (fit for 2mm axle)
material: plastic
Color: white, red, gray
Weight: about 1.8 g/pc
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