Hold plane blades up to 65 mm wide Hold chisel blades down to 2 mm wide Simple setup and use Hardened steel roller Use on whetstones, oilstones, sandpaper or diamond stones Typical Settings Projection from upper jaw: 50 mm = 25 degrees 38 mm = 30 degrees Projection from lower jaw: 40 mm = 25 degrees 30 mm = 30 degrees