Features 1、18PCS IN 1 SET: Including 18pcs metal gears, with different numbers of teeth and sizes, with strong practicability. 2、EXCELLENT MATERIAL: Made of excellent HT250 gray iron material, rustproof, wear and corrosion resistant. 3、MULTIPLE TYPES: Equipped with 2pcs duplex gears and a moter belt pulley to meet more processing needs. 4、FINE PROCESSING: These gears using fine milling techniques to polish to ensure high accuracy and stability. 5、LATHE ACCESSORIES: Widely used for CJ0618 mini lathe or metal cutting machine, with strong compatibility. Specification Item Type: Gear Kit Material: HT250 Gray Iron Specification: Type Diameter Thickness Tooth T80 Gear 83mm / 3.3in 7mm / 0.3in 80 Tooth T60 Gear 62mm / 2.4in 7mm / 0.3in 60 Tooth T50 Gear 52mm / 2in 7mm / 0.3in 50 Tooth T45 Gear 48mm / 1.9in 7mm / 0.3in 45 Tooth T40 Gear 42mm / 1.7in 7mm / 0.3in 40 Tooth T35 Gear 37mm / 1.5in 7mm / 0.3in 35 Tooth T30 Gear 32mm / 1.3in 7mm / 0.3in 30 Tooth T25 Gear 26mm / 1in 7mm / 0.3in 25 Tooth T20 Gear 20mm / 0.8in 7mm / 0.3in 20 Tooth Duplex Gear 68mm / 2.7in, 50mm / 2in 45mm / 1.8in 43 Tooth, 31 Tooth Duplex Gear 50mm / 2in, 30mm / 1.2in 24mm / 0.9in 30 Tooth, 18 Tooth Belt Pulley 29mm / 1.1in 20mm / 0.8in 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 2 x Duplex Gear 1 x Moter Belt Pulley