The Bahco 466 series levels have a unique design on the radius, end caps, fastening pins and convex radius. They have two vertical (plumb) vials and one horizontal vial, with an accuracy of 0. 5 mm /m. The thick 1. 7mm profile construction will not twist and it has a V groove at the bottom making these levels ideal for use on pipes. Machined surface on top and bottom. Anti-shock rubber end caps. Laser edged centre zero measuring scale along the edge. Anodised finish. 2 hand holes. (only 1 on 400mm).