About products and suppliers
12210 2:1 ratio. products are offered for sale by suppliers on Alibaba.com, of which speed reducers accounts for 4%, gearboxes accounts for 2%.
A wide variety of 2:1 ratio. options are available to you, such as oem, manufacturing plant and machinery repair shops.You can also choose from iron, steel and cast iron 2:1 ratio.,As well as from odm, obm 2:1 ratio.,and whether 2:1 ratio. is bevel / miter, or spur.