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Drag Bits


Rotary type Drag Bits are used for the same manner and for the same purpose as milled tooth Rock Bits, except that they are limited to softer formations generally. They are, in most cases cheaper than Rock Bits. The cutting profile may be flat, chevron or stepped according to application. They may be used in air or fluid flush.

When ordering Drag bits please ensure that the following information is clearly provided:

Formation to be drilled
Flushing medium (air or fluid)
Profile of bit (flat, chevron or stepped)
Size Type Pin
4 7/8 - 5 1/8 2 3/8 API
5 1/4 - 5 1/2 2 3/8 API
5 5/8 - 6 2 3/8 API
6 1/8 - 6 1/4 2 3/8 API
6 ½ - 6 1/4 2 3/8 API
6 7/8 - 7 7/8 3 1/2 API
7 7/8 - 8 7/8 4 1/2 API
8 - 9 3 1/2 API
9 - 9 7/8 4 1/2 API
9 1/8 - 10 7/8 3 1/2 API
10 - 10 7/8 3 1/2 API or 4 1/2 API
11 - 12 1/4 3 1/2 API or 4 1/2 API
 
Drag Bits

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