The Harken 40.2STA is a size 40 self-tailing, two-speed Radial aluminum winch for trimming or raising sails.

The Radial winch drum's gripping surface is shaped for each winch size and drum material and features diagonal ribs (rather than textured abrasive materials) to maximize gripping power and greatly reduce line wear. The self-tailing mechanism on the winch means that one crew member can quickly and easily trim or raise sails.