Size:Diameter is approx.10.6 mm ,height approx.7.6 mm. Material: PVC rubber+Steel needle,Durable and unbreakabl Aazon.co: Ruidee 200 Pieces/100 Set Rubber Pin Backs with Tie Tacks... Brand New Backs Butterfly Clutch Holder Replacement for Lapel Brooch Jewelry Tie Tack Citation Bars Specifications: Material: PVC rubber. Quantity: 100pcs;Color:Red Hocansen 200 Pieces/100 Pairs Rubber Pin Backs PVC Pin s Locking s, Lapel s, 50PCS Brass Metal ings Pin Back Applications: the rubber pin back can be applied when tie tacks and lapel pins lose their back,suitable for craft projects, sewing fabric, making corsage, name badges etc. CV Joint Boot Kit Beck/Arnley 103-2957 ; Warranty Type. Manufacturer Warranty ; Est. delivery. Tue, Mar 18 - Sat, Mar 22. From Miami, Florida, United States High Quality Butterfly Clutch Pin Backings Pin Cap Replacement for Badges, Lapel Pin