The 8,000 lbs. Pulley Block Assembly is engineered for the KWSL2000RM, KT2000, KT3000, and KT4000 Winches. The 8,000 lbs. Pulley Block allows the winch user to double the pulling capacity of his winch. The 8,000 lbs. Pulley Block also has a clevis hook with safety latch build in to make setup more efficient.