Harken Electric Winch Conversion Kit at Lucinda Mckellar blog Harken Radial Self Tailing Winches (2 Speed) Harken Winch Switch at Robert Huang blog 990 Self Tailing Racing Winch 3 Speed Harken. 60mm Element Triple Block Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Elements design pairs the minimum amount of metal required to protect the sheave with a proven journal bearing. So size for size, Element is priced significantly lower, than our previously least expensive blocks. Sideplates are hard coat anodized to resist corrosion. A tough composite bearing sheave resists corrosion for long service life. Specifications: Sheave: 60mm 2 3 8in. Length: 165mm 6 1 2in. Weight: 710g 24. 9oz Shackle Pin: 8mm 5 16in Maximum Line: 12mm 1 2in Maximum working load: 816kg 1799lb Breaking load: 1632kg 3598lb