Hammer highlights:

It looks much better in reality

Switch your Super Drifter into high-speed mode on the transmitter and attach the included high-grip wheels – and just like that

Contains gas under pressure

Fits drive shafts with threads

LiPo 4000 (7,4V) STX7 Hammer highlights:7. 4V LiPo battery pack with a 4000mAh capacityan awesome pack at a great price. Equipped with thick silicone wires and a T plug for reliable performance. Suspect LiPo batteries use higher quality materials, so you get a pack that holds voltage better and lasts through more charge cycles than other batteries in this price range. NOTE! Want to use this pack in your Hammer? It fits perfectly in the latest version (comes standard with a 2600mAh battery).