This is a pack of 10 brand new thermal fuses (also called thermal cutoffs). They're RY type, rated for 250 volts and 10 amps, with a cutoff temperature of 216°C (about 421°F). The part is often labeled SF214E or similar. These fuses are used in appliances, power tools, heaters, and electronics to prevent overheating—they blow and break the circuit if things get too hot. They come new in original packaging, unbranded/generic, with no MPN or UPC. Handy to have around for repairs or DIY projects where you need reliable overheat protection. US stock means fast shipping.