What is this?These upholstery tacks are made with good metal and electroplating processes, and these pins can withstand long-term use without being easily damaged. It can be used on various furniture such as headboards, sofas, sofa chairs, chairs, benches, floor mats, etc. It can also be used to decorate DIY crafts.What will I get?The Black Thumb Tacks, is in size ofRound Cap: 11mm/7/16 Inch(0.43 Inch);Total Height: 10mm/0.39 Inch;Color: Red;Material: Metal;Package Included: 110Pcs x upholstery pins.Are there any advantages of the product?These decorative black tacks are sturdy, durable, and have a smooth touch, which can also add beauty to furniture, easily match the surrounding environment, and decorate DIY crafts.How to use it?Just use pliers to clamp the DIY decorative nail, and then use a hammer to hammer it into the edge of the soft wooden board or sofa or soft bed.What should I notice?Please be careful not to hold them with your fingers to avoid hurt, as they may bend under incorrect operation. Due to manual measurement, please arrow error 2mm.