The SIMPLEX series 3137 is available with the insert combination of TPE-mid/superplastic. The grey, medium hard TPE-mid insert (series 3203) is a thermoplastic elastomer that does not leave behind any colour marring or - unlike a conventional rubber mallet - any undesired black marring. Its hardness is comparable to that of the rubber composition insert (series 3202).
The superplastic insert (series 3207) allows for a more powerful impact force than the rubber insert.,The SIMPLEX series 3137 is available with the insert combination of TPE-mid/superplastic. The grey