Construction: 46-ton Toray Carbon blank with MLS Slim Structure and Octa Core Grid Fuji Torzite inserts which are 30% lighter than SiC inserts Titanium outer frame EZ hook keeper system iGrip is an expanded carbon blank allowing for 1 complete piece blank from tip to butt of rod for increased sensitivity and reduced weight EVA butt Models: SMT-601UL, SMT-621M, SMT-681M, SMT-6101L, SMT-721H