Titan 651-072 18" Tip Extension aluminum Replaces Titan 0516741 and is same as Titan 2418851 20" Tip extension
Fits the following models: Advantage GPX 33, Elite 3500, Impact 340, Impact 400, Impact 410, Impact 440, Impact 540, Impact 640, Impact 740, Impact 840, Impact 1040, Impact 1040T, Impact 1140, Impact 1640