Hercules Hoists Ltd offers Standard Chain Pulley Block. Hercules Hoists Ltd is an ISO 9001:2000 certified company. Standard Chain Pulley Block has been tested as per ISI procedures for 50% over load, delivering assured safety levels. It is provided with a Grade 80 Load Chain ensuring durable chain life. It includes Double Ball Bearing supported Load Wheel offering easy operation. It also has precision machined Case hardened alloy Steel Gears for noiseless operation and durable span.