Features: The interface specifications are XH2.54-2P. Black-spot type, NTC 10K B=39503%, 125 temperature resistant. Ring type probe, NTC 10K B=39501%, 105 highest temperature resistant. Cylinder type probe, NTC 10K B=39501%, 90 temperature resistant, not as sensitive as the big black-spot air probe because of its large heads. The big black-spot is relatively suitable for air detection; The circular probe is suitable for fitting and fixing; The cylindrical probe is relatively suitable for liquids. Specifications: Material: Metal, Plastics Type and Size: Ring: 0.5m Cable, 4.2mm Ring Inner Dia Black-Spot: 40cm Cable Cylinder: Approx. 1m Cable, 5x25mm Probe Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Probe