Hot waxing is an increasingly popular way to lubricate chains. The solid wax does not collect dirt and keeps the entire drivetrain clean, repelling dirt very well. Black Diamond Hot Wax chain wax combines Black Diamond's highly lubricating additive technology with Rex's over 70 years of experience in paraffins. Switching to hot waxing makes it much easier to keep your bike clean, and protects your chains and sprockets from wear. A hot waxed chain does not mess up or stain, and can be cleaned with just hot water. To ensure high quality, Rex has put all the Black Diamond additives in one black block. The additive block is like a bottle of Black Diamond chain oil in solid form. Eleven white Rex paraffin blocks are a carefully selected wax blend, and when combined with the additive block, they ensure excellent lubrication. By melting all the blocks (11+1) together, you get a wax blend that works great in all conditions. By melting the additive block with four light wax blocks (4+1), you ge