The Swix Base Edge File Holder, Racing is a guide to reset or polish your base edge. The guide will come in many diferent angles, or degrees, depending on what you like your edge to be. The smaller the angle the quicker you can put your ski or board on edge. The higher the angle the more stable an edge hold at faster speeds. A 1 degree base edge works great for your everyday skiers or riders or for GS racers, whereas a 0.5 degree is usually for slalom racers.