Thank you for viewing! This item was made through woodworking and fretwork practice. The wood is rosewood, the frets are Freedom SPNF04, and the inlay is abalone. The cord uses FUJIYAMA RIBBON cotton cord, which is flexible and provides a very secure feel. It feels as secure as a Pacifica guitar, to give you an idea. The cord is set to a long length, but if you want to shorten it, please untie it and retie it to your desired length, then cut off the excess cord. Also, if the cord becomes twisted or creased with use, you can lightly moisten it and dry it with a hair dryer to restore it. This product comes with a ball chain. You can remove the cord and attach the ball chain to use it as a key chain (the image of the ball chain in use is just an example. The product in the image is not included, so please understand). I have taken care to ensure there are no burrs on the fret sides, but as with regular guitars and basses, the wood may shrink over time, and burrs may appear. Please be careful not to catch it on your skin or clothing when wearing it. Considering that this necklace is constantly in contact with skin and clothing, I have applied tatara water-repellent ceramic multi as a finish. This paint can also be used on wooden tableware and enhances water repellency, waterproofness, and stain resistance without compromising the texture of the wood. *However, this does not guarantee that there will be no color transfer to clothing or skin problems caused by the natural components of the wood. Color transfer to clothing may occur depending on the usage environment. *To avoid skin problems, please wear it over clothing as much as possible to avoid direct contact with the skin. Also, please be aware that there is a higher possibility of developing a rash if it gets wet with sweat or rain. *Please check beforehand to make sure that no skin problems occur before wearing it, and discontinue use immediately if you feel any abnormalities. As this is a handmade item, there may be some areas where the precision is not as high as commercially available products, but please understand this. How about it as a small My new gear for yourself? If you have any other questions, please feel free to comment. #guitar #acousticguitar #electricguitar #electricbass #fretboardnecklace