Khk Gears Spur Gear: Module M 0.5, 20 Teeth, 4 mm Bore Dia, Black Oxide Coated Carbon Steel, Plain Bore Model: SS0.5-20B

Khk Gears Spur Gear: Module M 0.5, 20 Teeth, 4 mm Bore Dia, Brass, 20 Pressure Angle, Plain Bore Model: BSS0.5-20

Khk Gears Spur Gear: Module M 0.5, 40 Teeth, 5 mm Bore Dia, Duracon, 20 Pressure Angle, Plain Bore Model: DS0.5-40

Khk Gears F-Loc Spur Gear: Module M 0.5, 40 Teeth, 5 mm Bore Dia, Acetal, 20 Pressure Angle, Finished Bore Model: DSF0.5-40

Khk Gears Internal Ring Gear: Module M 0.5, 80 Teeth, 40 mm Pitch Dia, Black Oxide Coated Carbon Steel Model: SI0.5-80

Uxcell Worm Gear Set - 0.5 Module 60:1 Reduction Rate 3mm Hole Dia Gear Shaft And 6mm Hole Dia Gear Wheel 60T Drive Gear Box (Brass)

Khk Gears F-Loc Spur Gear: Module M 0.5, 28 Teeth, 5 mm Bore Dia, Stainless Steel, 20 Pressure Angle Model: SUSF0.5-28