uxcell M5 x 20mm Metric Male Thread Knurled Clamping Knobs Grip Thumb Screw on Type Hand Clamping Handle Bolt with 16mm Plastic Knobs Black 8 Pcs M5 x 20mm x 16mm industrial_Dec2022 highest and lowest temperature at June2023_cocoonwix highest and lowest temperature at same time Replaceable metal probe durablereplaceablemetal materialwaterproof probe Buzzer Alarm High and low temperature alarmsTemperature probe failure alarmsLong press 'Decrease button' can turn off the buzzer Large size EU:39 41 IMPROVED FOOT POCKET Formulated with soft natural rubber for increased comfort Non slip Design of Sole Protruding grains of sole are non slip and powerful suitable for beginners and snorkelers to train SHORT BLADE Promotes shorter and faster kicks while experiencing propulsion through the water Read more Come with a mesh bag Read more NOTE: These fins are meant to be put on in water lathe and routing jigs Thread Length: 20mm 0