Letters Velcro Hook 1.made of nylon 2.specification:diameter 20mm,make as customer's request 3.use for shirts etc 4.SGS/ROHS Product name:Letters Velcro Hook 1)made of 100%nylon2)any size,any color can be make as customer's request3)use of the garments,for example the shirts4)the product passed the SGS/ROHS report,up the environmetal protection standard.