60" x 8" Orange Thunder™ with KO 20™ Technology Bull Float Blade Crain 100 Lb Vinyl Roller Pool Plaster Disc uses Matrix WSZIP130 Pool Plaster Disc uses Matrix Abrasive bonding technology for controlled pool plaster surface correction in both dry and wet polishing insert one of the pointed edges into a relief in a shim and lift the blade carrier to separate the shims 60" x 8" Orange Thunder™ with KO 20™ Technology Bull Float Blade with ProForm® Handle is a 16" hand float that features curved surface lines to evenly distribute the paste to keep the surface open longer KO 20™ material is impact resistant for extended wear