This RTD Pt100 temperature sensor probe is made of 304 stainless stee.It adopts high preciseness chip, so the temperature measurement is more accurate. And it is suitable for the injection molding . Specifications: Type: RTD PT100 (membrane) A class Working Temperature: -50 to 300 ? Probe Length: 50mm (2) Diameter: 6mm (0.23) Thread Size: 1/2 NPT Nominal Outside Diameter: 0.84 Probe Material: Stainless steel Wire: Tin plated copper wire Wire Length: 2m (6.6) Weight: 100 g(approx.) Package includes: 1 Temperature Sensor Note: 1/2 NPT here indicates the national pipe thread standard(US), please check first and make sure this is the size you need.