Very strange as the box is printed with the T140 fitment and 76mm diameter and the box was tape sealed.
Today i re-fitted the 5000 mile Harris rings and the cylinder is now back on the engine. Spent a bit of time accurately locating the tappet blocks in the cylinder. O looked back in my repair book and that 750 kit is 20 years old now with 25,000 miles covered. Bike now at 50,000 miles and the cams and followers still look very good.