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Product characteristic: Securistyle Sterling Lock consist of a single gearbox. The gearbox assembly consists of a number of patented unique features that include a cam-action retention system, bi-directional drive, interchangeable connection system, stainless steel housing. The gearbox provides bi-directional drive for a perimeter locking system with multiple locking points. Product is normally used in commercial applications and is produced from Austenitic grade 304 stainless steel for corrosion resistance and strength. Gearbox is capable of being retained in position without the need to fit the handle, which prevents handle damage during transportation of the window. Can be manually or automatically operated.