According To Your Choose
Note: The color of different batches of gears will be different, but it will not affect the use. 
Made of 45# steel, there may be rust in the case of water, which is a normal phenomenon and will notaffect normal use, does not belong to quality problems, if you mind it, please don't buy. Thanks.

Product processing technology will be irregular update, the pictures . sometimes not updated in time,please understand.

All product outward appearance, the color take the material object as, the picture only supply the reference.