Ruby Terp PearlsTHE MOST IMPORTANT BANGER ACCESSORY No banger setup is complete without a Ruby Terp Pearls. The Ruby Terp Pearls will be an additional heating element in your banger and will turn inside the banger when utilizing a directional carb cap distributing your concentrates evenly. This will save you money by making your banger more efficient and give you better quality vapor & vapor production. VERY DURABLE Rubies have a hardness of 9. 0 on the Mohs scale of