Riffe Euro Series Speargun Mag-Track for Better Accuracy and Freeshafting "X" Models Have Rear Stock Extension For Hip Loading Comes With 6.75mm(17/64in) Shaft and (2) 5/8" Gun Bands 110X -130 Models Come With Thicker 7.1mm(9/32") Shaft and Stock Built-In Threaded Reel Inserts Designed to Fit the Riffe Horizontal Reel