The versatile and reliable Harken Self Contained Micro Sheave is ideal for custom applications, making it a popular choice among sailors. Available in various sizes, including the 7/8 inch (22 mm) American Metric, it boasts a width of 13/32 inch (10 mm) and a lightweight of just 0.1 oz (3 g). Its Delrin® material and ball bearings ensure durability and superior performance when handling ropes. The 16 mm AirBlock® sheaves are even stronger, thanks to their stainless ball bearings and groove race design. For wire use, choose from Delrin® or aluminum midrange sheaves, or opt for the Hardkote-anodized aluminum wire sheaves with Teflon® impregnation and high-load composite bearings. Larger sheaves feature ball bearings to reduce friction, while the 1 inch (25 mm) wire sheave is equipped with low-friction washers for optimal performance. Part No. 277