Prosharp Double Blade Holder. Allows you to profile two blades at once on the AS 2001 ALLPRO-SC or sharpen single blades on the Prosharp® Home and SkatePal. Align the blades to the same level before profiling. Cut your profiling time in half by profiling two blades at once. Great for sharpening single blades on the Prosharp® Home and SkatePal.