These TME hand held probes come in two types, a ball shape for ease of penetration and a straight handle for greater control. both styles are made from polypropylene. They are totally encapsulated, increasing strength, durability and ensuring the sensor is entirely waterproof. Polyurethane cables are used as standard (as opposed to PVC) for enhanced memory of their curl, greater retractability and strength. Ideal for use with the TME MM2050 PT100 digital thermometer