Toydriver is a small, battery operated screwdriver specifically for the tiny screws on all toy battery covers. Toydriver works on tiny to medium-sized screws so kids can get back to having fun faster! No more toys put out to pasture because the batteries no longer work. Toydriver's long and narrow bit reaches recessed screws perfectly. Right amount of power (low torque) won't strip small screws. Toydriver is specifically for changing toy batteries and is not guaranteed to work on heavier jobs like toy assembly. If a toy battery cover has been previously overtightend, use Toydriver to manually unscrew until power kicks in. Batteries included are demo batteries - if unit is sluggish, replace with a fresh pair. Bits are not universal and are made specifically for use with Toydriver only. WARNING: NOT A TOY - FOR ADULT USE ONLY.