Pin Backs for Lapel, Brooch, Tie, Hat, Badge Insignia, Name Tag, Jewelries Features: Rubber pin backs made of high quality pvc rubber Pin backings lock your pins firmly and securely Pins locking backs compatible with pins 1-1.2mm in thickness Pin clutch backs great for most lapel pins, tie tacks, badge insignia, citation bars, jewelry,etc. Specification: Diameter: 11mm Height: 7mm Warm Tips: 1)The size above is measured by hand, the size of the actual item you received could be slightly different. 2)Pin backs locking are small and tiny accessories, please keep them away from children under 3 years old and your pets as well. Package Includes: 100PCS Rubber Pin BacksPACKAGE INCLUDES: 100PCS black pin backs and 1-year warranty. If you have any questions, please do not hesitate to contact us. WIDE APPLICATION: idea use as lapel pin backs, brooch pin backs, tie pin backs hat pin backs, fits on tie tacks, badge insignia, name tag, toy pins, citation bars, jewelries and other homemade craft pins. PIN BACKS SIZE: locking pin backs are 11mm in diameter and 7mm in height, great pin clutch backs replacement, compatible with pins 1-1.2mm in thickness, it cannot fasten if the pin is too slim. PIN SECURE BACKS: pin backs lock pins firmly and secure pins in place, no worry about losing your meaningful pins. PIN RUBBER BACKS: pin backings made of PVC rubber, durable for long time use.Number of Pieces: 100. Brand: EACOZY. Material: pvc, Rubber. Date First Available: December 29, 2019. Best Sellers Rank: #2,934 in Arts, Crafts & Sewing. Customer Reviews: 4.7 4.7 out of 5 stars 2,189 ratings 4.7 out of 5 stars. Item model number: PB-B. Country of Origin: China. : B08196BG78. Manufacturer: KASBEE. Item Weight: 1.13 ounces. Product Dimensions: 0.43 x 0.31 x 0.31 inches.