24mm Koptan High-Temperature Resistant Tape (30 Meter) soldering bit This is the PC410 Optocoupler

This is the PC410 Optocoupler manufactured by Toshiba

This is widely used in Industries

The 100K Pot Potentiometer is a three-terminal variable resistor that is used to vary or change the resistance

This antenna is designed with a flexible magnetic base

They're also great for increasing the amount of ventilation space around components when the equipment becomes heated

24mm Koptan High-Temperature Resistant Tape (30 Meter) soldering bit This is the PC410 OptocouplerKoptan tape is a polyimide film first developed by DuPont in the 1960s. It remains stable at an extremely wide range of temperatures from 269C to 260C and has been an industry standard due to its excellent electrical, thermal, chemical and mechanical properties. This enables the film to withstand extreme temperatures, vibration, and other demanding environments. This Koptan 24mm wide High Temperature Resistant Tape for 3D Printers is a polyester film