1.5lbs is the perfect size for your small projects and pre-measured to the exact amount of fiber to go into one 50lb Fishstone Pre-blended GFRC bag mixes
1/2" length AR(Alkali Resistant) Glass Fibers
Contains a minimum of 17% Zirconia for long term durability
18 Microns filament diameter, 200 filaments per strand
Increases tensile strength (Three times higher than steel)