Nail free glue is an environmentally friendly and non-toxic product, which is synthesized from resin raw materials. It can be bonded to any material, is odorless, does not hurt the skin, and does not turn black or moldy. Nail free glue has super strong bonding ability. After drying, it can surpass the fixing strength of iron nails. After using nail free glue, there wiill be no loosening or shaking problems between metal parts and wooden materials and materials. It is strong and safe, and the quality is guaranteed.