P323119 Prym Cover button blanks. Made of stainless metal and a stable wire eyelet are available in sizes between 11 mm and 38 mm.. A gearwheel on the inside helps the fabric stretch evenly. The back of the packaging has illustrated instructions in three steps on how it works. A cutting template is also illustrated for cutting a circle in the fabric. Depending on the textile used, the finished buttons can be washed at up to 60 degrees. Available in bulk packaging with 100 units for professional needs. 323119 silver col 15mm without tool 100pc