Ever since Fuji introduced Fuji's Alconite ring Concept Guides rod builders and fisherman alike have been amazed at the performance characteristics of this guide. Alconite offers the strength, lightness, and durability not found in other rings. 80% greater compression strength and 20% lighter than aluminum oxide have made it the ring of choice by rod builders. When combined with the lightweight Concept Guide frame the results are unparalleled....35% lighter than ordinary guides and up to 50% lighter than ordinary tops. Alconite is one more reason why Fuji remains the undisputed leader in rod components.