The accessory attachment point is made from 3 parts: the outer shell (13g), a plastic spring (<1g), and a plastic bracket (<1g). The attachment point features several fins to aid with the alignment of accessories such as whisks, blades, etc.

Diameter/Height: 52mm

Lenght: 43mm

Width: 39mm

Height: 22mm

Diameter: 44mm

Height: 12mm

There appears to be provisions to screw the bracket and spring to the shell, however no screws were present within this particular model.