It is suitable for water drilling rigs such as Dongcheng 160 190 180 03-110, which are specially designed for special models. Among them, the 160, 190, and 110 brackets are larger drill bits, which can be installed to 200 bits, and the 180 brackets can be up to 180 bits. Determine the model and appearance of the brand before placing the order, or send pictures to customer service for reference. If the wrong model is selected, it can be returned, but the round-trip freight will not be borne. Please also understand, thank you!