The GT3 Series of belts and pulleys has more aggressive teeth than its little brother the GT2. The GT3 Series is more suited to higher torque applications, making it perfect for your automation projects. This belt comes closed loop making it perfect for use in a gear reduction system.
GT3 Timing belt is made from Neoprene and has Fiberglass reinforcement, GT3 Timing belt is much thicker than GT2 and has excellent tooth engagement.