Wikimedi'Òc

Fishtail Bit (drag bit) - Houston Museum of Natural Science - DSC01337.JPG - Daderot

Hughes Simplex Dual Cone Bit (bi-cone roller bit) - Houston Museum of Natural Science - DSC01342.JPG - Daderot

Natural Diamond Fixed-Cutter Bit - Houston Museum of Natural Science - DSC01344.JPG - Daderot

Polycrystalline Diamond Compact Bit (PDC bit, diamond shear bit) - Houston Museum of Natural Science - DSC01345.JPG - Daderot

Bi-cone Insert Bit (roller-cone bit) - Houston Museum of Natural Science - DSC01339.jpg - Daderot

Natural Diamond Fixed-Cutter Bit - Houston Museum of Natural Science - DSC01344 (cropped).JPG - Flominator