Product Description: Advantages: 1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information 2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.3.The Pin Nail is made of high quality metal, strong and durable. The surface is bright and durable to use.4.The pin of the product is threaded. In order to replace the loose tuning pin, it can be equipped with blind rivets.5.Suitable for: Lyre Harp DIY accessories. Attentions:1. When tuning the strings, remember not to adjust too much at one time. Unlike guitars, violin and other instruments, the tuning range of the lyre should not be too large2. New string running problem: When buying a new lyre or changing to a new string, due to the unstable condition of the lyre yard,and string, they usually loosen again after a minute or two after the adjustment. This kind of running sound is a common and normal phenomenon. At this time, you need to patiently adjust 3-5 times. Repeated adjustments for about a week can basically achieve a relatively stable state, but you should adjust it once before each performance.3. The first pitch :It��s normal to tune the strings when you tune the Lyre for the first time, because the first time you don��t have experience, it��s heavier to start. After a few days, the string is stable and then adjust it upAttentions: Due to manual measurement, please allow the size to have an error of 1-5mm. Specifications:Material: Iron Plated Chrome,WoodColor: Silver GoldenSize:Wrench:108 x 40 x 18mm/42.52 x 15.75 x 7.09inch(L x W x H)String nail: 5.3 x 41mm/0.21 x 1.61inch(Dia x L)Weight: 1717g Package include:16 x Lyre Harp Pin Nails16 x Pin Nail Accessories1 x Wrench