Die cast aluminum body provides extreme durability and strength can stand up to even the harshest of jobsite conditions 1.5 deg integrated slop button for easy 1/4 in per foot drainage, button has a slight radius to ensure it sits securely on pipe Plumb Site offers dual-sided, undistorted viewing in the plumb position and easy, more accurate plumb readings B-tank valve key provides the ability to open an acetylene tank valve without stripping Rare earth magnets are 5X stronger than strip magnets and allow for easy hands-free steel construction work Accurate guaranteed for life, vial lifetime guarantee V-groove edge Concave side
