UralBMT produces a wide range of Three Cone Rock bits for the Horizontal and Directional drilling in sizes from 4¾" to 6¾". The customers may use the recommendations listed below in the Table to choose the most popular size and type of Three Cone Rock bit for their Horizontal and Directional drilling needs. 

UralBMT created this Table based on many years of engineering and field experience, and the input from customers throughout the world (especially from Russia and the United States).

To use the Table, please follow these steps: 
1. Choose the type of Geological Formation by clicking on the appropriate heading in the table. 
2. Once the type of Geological Formation has been selected, follow the column to the desired Three Cone Rock bit diameter. 
3. To obtain the recommended best and second best choices, click on the square that you have intersected

Legend: - Best choice  - Second best choice

Size		Geological Formation
		Non-Abrasive			Abrasive
inch	mm	soft	medium	hard	soft	medium	hard
4¾	120.6
4	123.8
5	127
5	130.2
5¼	133.4
5½	139.7
5	142.9
6	152.4
6	155.6
6¼	158.7
6	161.9
6½	165.1
6¾	171.4
inch	mm	soft	medium	hard	soft	medium	hard
Size		Non-Abrasive			Abrasive
		Geological Formation

Legend: - Best choice  - Second best choice