10 x 100 Grit Disposable Signature Buffers: Part of the Signature series of files and buffers made from Grade A Japanese raw materials using the most cutting edge Korean manufacturing process. Half Moon Steel Cores are Purchased Separately Made from the same highly durable material as the new Signature buffer the replacements work in conjunction with the HM (half moon) Steel Core. This system will at some point in the future become the norm and will replace existing buffer systems. The disposable buffer system does not use a plastic core so the benefits for the environment are massive, the hygiene factor is also great should you replace the strip before each client. Each replacement has a superb adhesive backing making the attachment and removal a breeze - we cannot stress the ease with which they are stuck and un-stuck.