Scuba Choice 5" Break-Away Slip Tip 6mm Thread, Complete Assembly Break-A-Way Tri-Cut Slip Tip Spear Point Complete Assembly 5" (127 mm) long slip point with tri-cut for penetration power. Thread diameter: 6mm Detachable spear point and cable protect shaft from damage by motion of large fish. Rear fixed barbs cause point to turn sideways after entry for secure hold on speared fish. Point attachment cable assists in removal of spear point(Height 1.3 x Length 21 x Width)