Manual tongs are necessary tools applied to make up and break out pipes. Changing lug jaws and latch steps can adjust different handling sizes of the tongs. They are designed and manufactured according to API Spec 7K Specification for drilling and well servicing equipment. Q 3-3/8 ~12-3/475 Type B Manual Tongs Type B Manual Tongs is an essential tool in oil operation to fasten or remove the screws of drill pipe and casing joint or coupling. The handling size of manual tong can be adjusted by changing latch lug jaws and latch steps. The available range of manual tong is from 3-3/8 ~12-3/4 inch. liuda@lakepetro.com