The Magic Connect is designed to give an easy, yet strong connection between the shaft, and head.
It is the same technology as the Fixcraft cleat, see here for more info
Made from 6063 Aluminium, at 3.5g it's the simplest and lightest connection system out there, and will work with most shafts and mallets available.
Each connect will come with a standard 40mm M6 bolt, and an M6 nut for the shaft. As an alternative to the bolt, you can also tap your shaft.