Look no further for your next improvement with the Chrome Shifter Shaft Extension, available in 6, 9, 12 or 18?inch lengths. Each extension has a 3/4?inch diameter with a 1/2?13 UNC threaded top and a 1?inch threaded portion that screws onto standard Eaton Fuller?style shift towers, making installation straightforward for many heavy?duty truck makes including Peterbilt, Kenworth, Freightliner, International, and Western Star. Sold individually as a non?OEM replacement, these chrome?plated extensions are recommended for show and off?road use and include a warranty against defects in materials and workmanship from the date of purchase. Because they are special?order interior accessories, they generally cannot be canceled or returned once ordered.