BOSTON GEAR NF24B Gear, Spur, 10 Pitch. More details: Spur Gear, 10 Pitch, Pitch Dia 2.400 In, Face Width 1.000 In, Number of Teeth 24, Bore Dia 0.750 In, Outside Dia 2.600 In, Overall Length 1.630 In, Hub Dia 2.02 In, Hub Projection 0.63 In, Pressure Angle 14 1/2 Deg, Keyway None, Setscrew Not Included, Steel Material