All pins used to secure the chain or jaws should be kept in place with safety pins or cotter pins.
固定链子或钳头的所有销子都应当装到位，并穿上安全销或开口销。
All the pins should install the cotter pins on it, and open the cotter pins.
所有销轴都要装上开口销，并将开口销打开。
Cotter-pins are stainless steel, fasteners are hot-dip galvanized steel, the other parts are aluminium alloy.
闭口销为不锈钢制件，紧固件为热镀锌钢制件，其余为铝合金制件。
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