一个真正的猪皮皮革乐队进行调整，以适应舒适，安全扣的扣子系。
A genuine pigskin leather band adjusts to fit comfortably and securely fastens with a buckle clasp.
钻工们卸掉安全扣合弹簧和大钳销子，换上与要上扣的钻具或管具相匹配的钳头。
The driller ensures that the safety latch springs are replaced on the tong pins.
配件：通用的配件有金属的勾扣、证件夹等，塑胶的有飞机扣、插扣、安全扣等。
Accessories: there are metal hook buckle, documents, folders and so on, the aircraft plastic buckle, insert buckle, safety buckle and etc.
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