Hobbypark RC Ball Bearing Puller Remover Installer Driver Tool Removal For Model Cars Helicopter Tool diameter: 2mm / 3mm / 4mm / 5mm / 6mm / 8mm /10mm/12mm /14mm Material: Metal (Harder & Stronger) Compatibile with:RC Cars Helicopters Easy and fast to dismantle and install bearings handle Length:44mm. Over all length:113mm