Ametric S1644 Inch Steel Spur MPB Gear, 14-1/2 Deg 16DP, 44 Teeth, 1/2 Inch +/-1/16" Pilot Bore (B), 1/2" Face Width (F), 2 Inch Hub Dia (H), 0.5 Inch Hub Projection (P), 1 Inch total width, 2.875 Inch OD, (1-125)