This is an environmentally friendly product (low VOC/lead-free) that does not use lead (Pb), a heavy metal that is a harmful substance. It has excellent electrical insulation properties, and its characteristics do not deteriorate even after use. Terminal peeling is minimal, allowing for secure wiring work. It has excellent cold resistance, and the adhesive strength does not decrease even at -10°C, ensuring a secure fit. This item was received as a gift and has been stored. It is an unused item. Please refrain from purchasing if you are concerned about its long-term storage. #See all Kotakota's listings here ★Yu-Packet Post ⇄ Nekopos May be changed without notice. ★I am not an expert, so I may not be able to answer detailed questions. ★Basically, these are used items that have been stored at home, so there may be signs of use, dust that cannot be removed, dirt, and minor scratches or stains that may not be visible in the photos. If you are concerned, please ask in the comments section beforehand. ★The items in the images are all that are included. ★Please be sure to read the profile and take a look at my other listings.