Drag Bits

Carlos M. Rosa Ltd manufactures various types of Drag Bits with several measures and threads, with high drilling performance and durability, for application in water abstraction, geotechnical, foundations, etc..

Our Drag Bits can be welded 3, 4, or 6 blades, depending on the needs of our clients.

Below is some possible combinations:

Threads	Possible Measures
2 ⅜” API Reg	3 ½” – 6 ¾” ( 88.9 – 171.5 mm)
3 ½” API Reg	6” – 17 ½” (152.4 – 444.5 mm)
3 ½” API IF	6 ½” – 17 ½” (165.1 – 444.5 mm)
4 ½” API Reg	12 ¼” - 19 ½” (311.2 – 495.3 mm)
6 ⅝” API Reg	12 ¼” - 19 ½” (311.2 – 495.3 mm)
6 ⅝” API FH	12 ¼” - 19 ½” (311.2 – 495.3 mm)