This is the Riffe 19/64" (7.5MM) M-TAB HAWAIIAN DOUBLE FLOPPER EUROSHAFT 19/64" (7.5mm) M-TAB Hawaiian DOUBLE Flopper Euroshaft. Made for the New Marauder. Also compatible with European style sling spearguns, including Riffe Euro wood speargun series. 17-4 stainless steel Shaft is heat treated and passivated for strength and corrosion resistance; flopper is heat treated and tumbled The original RIFFE-designed Shark Fin tabs Smooth finish capable of holding 1 to 2 power bands per Shark Fin loading tab All RIFFE M-TAB Euroshafts feature (3) LARGE Shark Fin loading tabs All shaft machined areas are hand finished Rest tab may be added for easier loading (Generally added to 60" and longer shafts) 12" up from loading end Available in the following sizes: 51"/130cm 59"/150cm 67"/170cm Having trouble figuring out which shaft fits your RIFFE speargun? Refer to Riffe&';s Spec Data Sheet - click here or View Riffe&';s Shaft Chart here