OROS STRIKE INDICATORS – Attach via enclosed fastening hardware inside two molded, biodegradable EVA hemispheres. Simply lay the tippet/leader into the inner groove and screw shut. The large threads make it effortless. The indicator is perfectly centered for balanced casting, stays where you put it, and will not kink the line. Interchange tops to create two-tone indicators if you like. COLORS: Multi-Color, (2)Red/White, (3)Chartreuse. SIZES: (X-Small .45”), (Small .65”), (Medium .85”), (Large 1.05”). 3-pak