... you need Gearbox, pls send the Model, Ratio and Quantity of the Gearbox to me, then, I will give you the ... best offer. The details of NMRV Gearbox are as follows:NMRV series worm gearbox:1 ... quality, competitive price, good after-sales service. Our address: Yipeng Town, Xiaoshan District, Hangzhou City, Zhejiang Province, China. Worm Gearbox with Motor