Function: The head is transparent plastic pattern the needle is spiral with it for decoration or repairing are a very good choiceThe operation is also very simple and convenient the spiral needle can make them firmerIf you don't want to organize the sheets every morning, you can use it to store sheets and mattresses togetherJust insert these metal dowels into the upholstery without tearing or snagging, and they will stick tight just so simple, so why not try Tips:The needle is sharps please keep your kids away from them. Application: Ideal for medium to light fabrics, bedding, covers, upholstery and bed creases. Upholstery screws are used to hold fabrics in place. They twist firmly in place and are easily removed by rolling in the opposite direction and do no harm to your fabric. Material: Plastic and alloy,Color: As the picture shown,Size:Each with 0.5 inch diameter,And 3/8 inch wire twist. Note: Size for manual measurement, there may be 0 to 2cm error, belongs to the normal phenomenon. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package Included:50 Pcs X screws with heads.