3/4" OD with a 1" OD flange that is 1/8" thick

cafe or stock bike with this slick part from LCFabrications

these caps are slightly domed

These are very nice and simple and feature a two screw clamp that is hidden underneath the bar for a clean look

3/8 drive Whitworth made in Japan sockets are perfect for working on your British motorcycle (Triumph

Tachometer Cable for Triumph / BSA / British Motorcycles Subcategory_Mechanical Brake Components 3/4" OD with a 1"These tach cables are 28" in length and will fit Triumph 66 73 T100 66 70 TR6 T120 and 71 73 Trident . Perfect fit on Smith tachometers. Kyle runs this exact tach cable on his '67 Triumph Salt Flats race bike and it has performed flawlessly.