Aftermarket clutch master seal set.Suitable for: (Classic) Mini, MGB, MGB GT, Sprite IV, Midget III-1500.Technical specifications:0-3/4"=0.75"=19mm.Cup 1: Internal diameter: 11.20mm, Thickness: 6mm.Cup 2: Internal diameter: 8.20mm, Thickness: 4.75mm.Technical drawing:Mini: nr 2.Mgb & gt: nr 3.Sprite IV & Midget III-1500: 45.