Medline MDS9608 SET, BULB&VALVE ASSEMBLY, PREMIUM (Box of 100) Go to amazon.com Related posts 14 best rectalthermometer covers FeatureProbe Cover Type - Rectal SheathsTemperature Location - RectalUNIT COMPATIBILITY - All Digital/Rectal ThermometerWeight - 0.100Depth - 2.400 DescriptionPre-lubricated rectal sheaths