Convert your air hammer into a pneumatic slide hammer Pull axles, seals, pulleys, wheels, distributors, speed sensors Hammer bolts, studs, engine and trans mounts from the back side with the J hammer One handed operation Works when your slide hammer won’t fit Connect to your current pullers Extend reach of tool with 20 extender Comes with ten jam nuts for easy set-up Tough heavy duty storage bag easily fits your tool box Texas Twister – safe, fast, easy, simple, effective air hammer bits you’ll use every day Revolutionize your air hammer today Patent # 7,036,211 1 Year Limited Warranty – factory defects only