Brass Screw Rivets for Leather Work Size Details: Bottom Diameter x Head Diameter x Height Bucket Stud: 1) 12 mm x 8 mm x 7 mm Screw dia:9.65mm,Height 7.7mm,Stem Height:5mm,Stem Dia:2.75mm Weight:6.3g 2) 10 mm x 6.5 mm x 6 mm Screw dia:9.65mm,Height 6.0mm,Stem Height:4mm,Stem Dia:2.75mm Weight 3.7g 3) 7.5 mm x 5 mm x 5 mm Screw Dia:7.5mm ,Height 6mm, Stem Height:4.2mm,Stem Dia:2.7mm Weight 2g Any questions please contact.