Product Description Product Name: 08B Industrial Flat SprocketNumber of Teeth: 26/27/28/29/30/31/32/33/34/35/36/37/38/39/40 TeethMaterial: Carbon Steel(45#)Tooth Pitch: 12.7mmWhether Standard Parts: StandardApplication:For use with roller chainsFeatures:1.Carbon metallic material, wear-resistant and corrosion-resistant, acid and alkali resistant, rust-proof.2.Smooth running, excessive load capacity, long life.Package:According for your Choose!