Tienly Motor Infinity U-40000 ( HS/HT, Short Axle )

<p>- Helix shaped rotor drawing air inside to keep motor cool, also preventing carbon / oil residue accumulation<br /> – High performance magnet<br /> – Pinion gear included<br /> – Suitable for battery packs up to 12V<br /> – Recommended spring rating at 12V: M80-M150<br /> – Safe rate of fire with M120 spring : 30 plus /-2 rounds<br /> – 40000 RPM</p>