Gear type: 15 kindsCalculation formula: gear outer diameter (addendum circle) = (number of teeth 2) * modulusGear model:1007A ,1008kxb,1008X,1008H,1008A,1009A,1010A1012A,1014A,1016A,1018A,1018D,1018F,Worm 6 * 6mm,Worm 6 * 10