Metal Polishing Compound Sample Packs Test and compare different professional metal polishing compounds with our sample packs. Available in Ferrous, Non-Ferrous, or by brands. See below "Additional Product Info" for more in-depth information on each polishing compound sample pack. Each Sample piece is approximately .8 lb. making the pack approx 5 lbs. Osborn (Ferrous) Polishing Compound Sample Pack includes six professional-grade buffing bars engineered for steel, stainless and other ferrous metals. See below "Additional Product Info" for more in-depth information on each polishing compound. This pack is approximately 5 lbs. Osborn (Non-Ferrous) Polishing Compound Sample Pack includes six professional-grade buffing bars engineered for aluminum, copper, brass and other non-ferrous metals. See below "Additional Product Info" for more in-depth information on each polishing compound. This pack is approximately 5 lbs. Kocour (Full-Line) Polishing Compound Sample Pack includes five professional-grade buffing bars engineered for ferrous and non-ferrous metals. See below "Additional Product Info" for more in-depth information on each polishing compound. This pack is approximately 5 lbs.