Item Type: Gear Milling Cutter Material: HT250 Gray Iron Specification: T80 Gear Diameter Approx. 83mm / 3.27in Thickness Approx. 7mm / 0.28in 80 Teeth T60 Gear Diameter Approx.62mm / 2.44in Thickness Approx. 7mm / 0.28in 60 Teeth T50 Gear Diameter Approx. 52mm / 2.05in Thickness Approx. 7mm / 0.28in 50 Teeth T45 Gear Diameter Approx. 48mm / 1.89in Thickness Approx. 7mm / 0.28in 45 Teeth T40 Gear Diameter Approx. 42mm / 1.65in Thickness Approx. 7mm / 0.28in 40 Teeth T35 Gear Diameter Approx. 37mm / 1.46in Thickness Approx. 7mm / 0.28in 35 Teeth T30 Gear Diameter Approx. 32mm / 1.26in Thickness Approx. 7mm / 0.28in 30 Teeth T25 Gear Diameter Approx. 26mm / 1.02in Thickness Approx. 7mm / 0.28in 25 Teeth T20 Gear Diameter Approx. 20mm / 0.80in Thickness Approx. 7mm / 0.28in 20 Teeth Double Gear Diameter Approx. 68mm / 2.68in 50mm / 2.00in Thickness Approx. 45mm / 1.77in 43 Teeth 31 Teeth Motor Pulley Diameter: Approx. 29mm / 1.14in Thickness Approx. 20mm / 0.80in Package List 2 x T80 Gear 2 x T60 Gear 2 x T50 Gear 2 x T45 Gear 2 x T40 Gear 2 x T30 Gear 1 x T35 Gear 1 x T25 Gear 1 x T20 Gear 1 x Double Gear 1 x Motor Pulley 1HT250 Gray Iron: Made of high quality HT250 gray iron, and the surface of the gear is rust prevention, which is durable. 2Accuracy Polishing: The mini lathe gears are milled using pricing milling technology, which can ensure high accuracy. 3Wide Compatibility: This is CJ0618 mini lathe gear, which is compatible for mini lathes and metal cutting machines. 4Smooth Use: The gear is smooth and convenient to use, has great workmanship, and is a perfect replacement for old or damaged gears. 5Sufficient Rigidity: This is an easy to install mini lathe gear, which provides a good cutting range and sufficient rigidity.