FST Tube: Fuji High Grade Stainless Steel, Gunsmoke Finish
FST Ring: Fuji “Sic” Silicon Carbide Ring. Silicon Carbide is the Premier Ring Material with Unsurpassed Hardness and Smoothness.
Matching Guides For FST Tops: LNSG.
All tops have a ring size of 7mm.
All tube sizes are in 64ths of an inch.
For example: A size 8 top has an 8/64" (0.125") inside tube diameter.