● Double pawl brake system – reinforced pawl, ratchet disc and brake Disc ● Double high precision CNC machining load chain guides ● Dust cover on brake system can effectively prevent rain and mortar intrusion ● Engineering optimized hand chain wheel groove and cover, preventing hand ● Chain stack in fast operation ● High quality alloy steel forging hook ● T80 load chain with high precision, high strength and chain strength up to 1000N/㎡ ● High strength chain end connection, with 2.5 times safety factor ● Super robust, much higher than 1500 cycles EN 13157 endurance testing