NO MESS NO BROKEN BARS NO WASTE. Push up cardboard tube exposes only the amount you need. Black Rouge: Used most commonly for final polishing. Often used in polishing musical instruments. Metal Used On: Silver, white gold, white brass and platinum. Results: Leaves a rich, dark luster; darker than red rouge. For best results, use after preparing the surface with pre-finish compound such as tripoli. Type of Buffs: Loose muslin, chamois or cotton flannel. Grobet "Push Up" tubes contain approximately 3-4oz. of polishing compound.