Recently received from Japan: Toyota 09051-1C100, a 16oz/450g ball peen hammer made by One Hand in Japan. Pretty good, simple hammer for $14 from Toyota Japan (before any shipping).
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I would bet money this is the exact hammer that Toyota specs for frame inspection by their technicians. Toyota published very specific instructions on how the technicians should hit the frames to check for structural integrity if no rust holes are present. Many of the full frame Toyota vehicles suffer from extreme rust and corrosion to the point that Toyota was/are replacing the frames if the vehicle qualifies. For the early (95.5-98) 1st generation Tacomas they were actually buying them back from the owner at 1.5 x KBB value at excellent condition. I actually went through this process with my '96 Tacoma.



