3/4" to 1/2" Tapered Spiral Band - 2-1/2" Length, Ceramic Oxide CO-COOL, 120 Grit The packaging size is ideally suited to industrial requirements. Active grinding additives in the coating substantially improve the stock removal rate, prevent loading and results in cooler grinding. Matching, reusable rubber drum holders in two different shapes are available for using abrasive spiral bands: - Cylindrical - Conical For aggressive grinding with maximum stock removal rate on hard and tough materials which donot conduct heat well..