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REGULAR CIRCULATION ROCK BITS
Steel Tooth Products
DIAMETER FORMATION TYPE PIN SIZE APPX. WT.
in mm Soft >>>>>>>>>>>>>>Hard API lbs kg
2 15/16 75 - - - 321 N-Rod 7 3.1
3 5/8 92 211 - - 2 3/8 8 3.9
3 3/4 95 - 211 - - 2 3/8 8 3.9
3 7/8 98 - 211 - 321 2 3/8 10 4.5
4 101 - 211 - - 2 3/8 11 5
4 1/8 105 - 211 - - 2 3/8 11 5
4 1/4 108 - 211 - - 2 3/8 11 5
4 1/2 114 - 211 - - 2 3/8 12 5.4
4 5/8 117 - 211 - - 2 7/8 12 5.4
4 3/4 121 - 211 231 - 2 7/8 12 5.4
4 7/8 123 - 211 - - 2 7/8 14 6.3
5 211 - - 2 7/8 14 6.3
5 1/8 131 112 211 - - 2 7/8 14 6.3
5 1/4 133 -

211

 - - 2 7/8 15 6.8
5 1/2 140 - 211 231 - 3 1/2 17 7.7
5 5/8 143 - 211 - - 3 1/2 20 9
5 7/8 149 - 211 - - 3 1/2 22 10
6 152 - 211 - - 3 1/2 24 10.9
6 1/8 156 - 211 - - 3 1/2 26 11.8
6 1/4 158 - 211 - - 3 1/2 29 13.1
6 1/2 165 - 211 - - 3 1/2 30 13.6
6 3/4 171 121* 211 - - 3 1/2 37 16.8
7 1/2 190 131* - - - 4 1/2 57 25.9
TCI Products
DIAMETER FORMATION TYPE PIN SIZE APPX. WT.
in mm Soft >>>>>>>>>>>>>>Hard - lbs kg
3 7/8 98 - 50 - - 2 3/8 9 4
4 1/2 114 - 50 - - 2 3/8 13 5.9
4 3/4 121 - 50 60 - 2 7/8 14 6.3
5 1/8 131 - - 60 - 2 7/8 15 6.8
5 1/4 133 - 50 - - 2 7/8 18 8.2
5 3/8 136 - 50 - - 2 7/8 18 8.2
5 1/2 139 - 50 - - 2 7/8 18 8.2
5 5/8 143 - 50 - - 3 1/2 22 10
5 7/8 149 - - 60 - 3 1/2 30 13.6



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