Bell Surface Temperature Probe,-40 to 500F/-40 to 260C temperature range,response time 4 seconds on oiled surface,4-1/2" (114mm) shaft length handle to bend,3/8" (9.5mm) shaft dia.,2/3" (17mm) tip dia.,48" (1.2m) extended and 12" (305mm) retracted cable length,Type K (J & T MTO) (Atkins)