ITEM NAME:Upgrade Metal 17T Motor Gear Spare Parts Pinion Gear Parts for Wltoys A959 D3Q9 Upgrade Metal 17T Motor Gear Spare Parts Pinion Gear Parts for Wltoys A959 D3Q9 Tooth Profile:Bevel Gear Shape:Pinion Processing:Die Casting Standard or Nonstandard:Standard The size of shaft hole:2.3mm Usage:Spare Parts For Wltoys A949 A959 A969 A979 RC Car Colour:Black material:metal Package Contents: 1* motor gear 1* sleeve.Usage:Spare Parts For Wltoys A949 A959 A969 A979 RC Car. Tooth Profile:Bevel Gear. The size of shaft hole:2.3mm.