Here are the specs Lip,
The Williamson Jet Popper has a 38mm cup face with jet holes through the face and out the sides of the neck, to create plenty of bloop and bubbles. With a 120g weight and 175mm length, this is a popper for big fish and long casts.
There are strong crane swivels and heavy duty split rings at all three connection points, flash foil sides, rattles, and 6X-strong VMC trebles.
Cheers Zac