Racelite mini-block (pulley) perfect for 1/4″ or 5/16″ line or smaller. Diameter of sheave (the part that turns) is 7/8″. Body is stainless steel. Made in USA. Extremely high quality. Perfect for the sheet line of a sailing dinghy. Strong — rated at 600 lbs. Includes loop of parachute cord as shown. Sheave may be black or white (potluck).