Hardcoated Aluminum 48p Pinion Gear Set (15T 16T 17T 18T) 48 Pitch - Associated Losi TLR Traxxas HPI Made from High Quality 7075-T6 Aircraft Grade Aluminum. As a result, these pinions are as strong as most steels, but with half the weight! Hardcoated for increased hardness and long life Laser etched with the gear size for easy identification Precision machined and lightened for an extremely true gear that runs quietly and efficiently Advantage Racing Products have won multiple ROAR National Championships