This carbon fiber handle tubing is available in two ID sizes. With the increased sensitivity it provides they are excellent for use as a Tennessee handle for a spinning rod, or as a rear and fore grip on standard casting & spinning rods. The 0.920 was designed with an OD to fit perfectly into the rear pocket of the American Tackle AERO-16 spinning seat. The 0.980 tube butts up perfectly with the rear pocket of all standard size 16, 17 & 18 mm trigger seats.