Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon Bergeon Right Mainspring Winder 18mm by Bergeon Sale $104.30 | / SKU 64-2729T-14 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon Notify me when back in stock Email address Email me when available Bergeon Right Mainspring Winder 18mm Red point: on right. Outside Diameter of 18mm. Bergeon Right Mainspring Winders are available in 19 various outside diameters. Sold separately. See products 64-2729T-0 to 64-2729T-15.