Sewing Buttons, Lance Home 150 Sets T5 Plastic Snap Studs Resin Poppers Fastener Buttons, 10 Colors, Size 20 Quantity: 10 packs T5 snap (totally 10packs). Each pack has 15 sets, totally 150 sets. 1 set = 2 Caps + 1 stud + 1 socket; Size: 20 , also call T-5. Size 20 is often use in clothes diapers; Easy to use and quite straight forward to operate; All these 10 kinds of colourful studs are great for making fastening more decorative especially on cushions and covers. You can match the colours to the material you are using. To apply these poppers buttons, you need one set of press pliers. Cut a hole, insert the spike and close with the coupler. Repeat on the closing fabric and you are done!