Excellent quality spey rod kit.
Fore grip: 300mm Bore ID 12mm. OD at base and top 28mm. OD at centre 30mm
Butt grip: 130mm Bore ID 12mm.OD at base and top 33mm. OD at centre 27mm
Reel seat: ID 16mm
The quality of these is first class and the reel seat is supplied with an O ring at the top to give a seamless fit against the fore grip.