Feature:<br> Spring Loaded fastener for easier on-off action without need a tool .<br> No Small Screws To Mess With. Spring Loaded Pin Keepers Easy To Use & Apply<br> Great For Keeping Your Favorite Pins Secure To Your Cut, Lanyards, Shirts, Hats And More!!<br> Great for all lapel pins, tie tacks, citation bars, service bars,name tags,and jewelry etc.<br> Note:These pin backs are not suitable for thick jackets.<br> Item Type: Jewelry Finding<br> Material: Copper<br> Color: Gold, Sliver,<br> Size:<br> Top Diameter: 10 mm/0.4"<br> Bottom Diameter: 7 mm/0.3"<br> Height: 7 mm/0.3"<br> Quantity: 10 Pcs,<br> Note:1.Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid.<br> 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!<br> Package includes(without retail package):<br> 10 Pcs x Pins Keepers.