Simple service kits are available to permit routine maintenance of Harken winches. Harken winch grease is non-aging, high adhesive synthetic lubricant with a temperature range from -200oC to 1500oC.Midrange blocks' robust construction makes them ideal for medium and large offshore boats. ESP (Elegant Simple Products) mastbase blocks offer several mounting options. Teardrop-shaped blocks provide direct attachment to padeyes or mast collar posts so lines are held extremely close to the deck. When unloaded, the teardrop shape keep the block clear of the deck.