(Inches)

(mm)

(Inches)

(mm)

(Inches)

(mm)

3 1/2"

88.9 mm

6 1/8"

155.6mm

8 7/8"

225.4mm

3 5/8"

92.1 mm

6 1/4"

158.8mm

9"

228.6mm

3 3/4"

95.3 mm

6 1/2"

165.1mm

9 1/8"

231.8mm

3 7/8"

98.4 mm

6 5/8"

168.3mm

9 1/4"

235.0mm

4"

101.6 mm

6 3/4"

171.5mm

9 1/2"

241.3mm

4 1/8"

104.8 mm

6 7/8"

174.6mm

9 5/8"

244.5mm

4 1/4"

108.0 mm

7"

177.8mm

9 3/4"

247.7mm

4 1/2"

114.3 mm

7 1/8"

181.0mm

9 7/8"

250.8mm

4 5/8"

117.5 mm

7 1/4"

184.2mm

10"

254.0mm

4 3/4"

120.7mm

7 3/8"

187.3mm

10 5/8"

269.9mm

4 7/8"

123.8mm

7 1/2"

190.5mm

11 1/2"

292.1mm

5"

127.0mm

7 5/8"

193.7mm

12"

304.8mm

5 1/8"

130.2mm

7 3/4"

196.9mm

12 1/4"

311.2mm

5 1/4"

133.4mm

7 7/8"

200.0mm

12 1/2"

317.5mm

5 3/8"

136.5mm

8"

203.2mm

13 3/4"

349.3mm

5 1/2"

139.7mm

8 1/8"

206.4mm

14"

355.6mm

5 5/8"

142.9mm

8 1/4"

209.6mm

14 3/4"

374.7mm

5 3/4"

146.1mm

8 1/2"

215.9mm

15"

381.0mm

5 7/8"

149.2mm

8 5/8"

219.1mm

15 3/4"

400.1mm

6"

152.4mm

8 3/4"

222.3mm

17 1/2"

444.5mm

Connection thread

2 3/8", 2 7/8", 3 1/2", 4 1/2", 6 5/8" API Pin

Bits profiles

Stepped and chevron

Numbers of wings

Three wings and four wings