60mm, 65mm, 76mm, 93mm, 95mm, 98mm (3 7/8') , 114mm, 118mm (45/8') ,120mm (4 3/4') ,127mm (5')

133.3mm (5 1/4') ,139.7mm (5 1/2') ,142.8mm (5 5/8') ,149.2mm (5 7/8')

152.4mm (6') ,155.5mm (6 1/8') ,158.7mm (6 1/4') , 165.1mm (6 1/2')

190.5mm (7 1/2') ,193.6mm (7 5/8') ,200.0mm (7 7/8')

215.9mm (81/2') ,222.2mm (8 3/4')

241.3mm (9 1/2') ,244.4mm (9 5/8') ,250.8mm (9 7/8')

269.8mm (10 5/8') ,295.3mm (11 5/8')

311.1mm (12 1/4') ,346.0mm (13 5/8') ,349.2mm (13 3/4')

374.6mm (14 3/4')

381mm (15') ,393.7m (15 1/2') ,406.4mm (16')

444.5mm (17 1/2') ,508mm (20') ,558mm (22') ,609.6mm (24')

660.4mm (26')

Steel tooth

(IADC)

111, 121131

117124126127136137

216217, 227

211311

TCI

(IADC)

415435, 417437

515525535545, 517527537547

615625635, , 617627637737

512522532612622632732