Festool Replacement Splinterguard for Guide Rails - 1400mm Clear splinterguard enhances visibility of cut line. A fresh splinterguard can be matched perfectly to the saw blade; providing precise alignment to your cut line; saving valuable set up time. A fresh splinterguard is the best protection against tear out; for cuts both with the grain and across. Change your splinterguard if you are switching between different blades or different saws; ensuring a precise match.