The T&S Brass 000801-25 cold spindle is a left-hand component specified for the B-1100 Series faucet assembly. It forms part of the handle-operated mechanism associated with cold-water control. The spindle’s orientation and series designation are important when identifying the correct fitting component for maintenance. Before ordering, compare part number 000801-25 with the faucet’s parts diagram and check the spindle arrangement against the existing assembly.