GloOrange Contractor Post Level, Durable High Impact Plastic Body With 90 Degree Bend, Acrylic Yellow Barrel Vials WithPatented White Reflective Backer Plates For Easy Vial Reading, Rubber Strap Attached To 1 Side Of Level Body EliminatesLoss & Allows For Hands Free Use, Hooks Quickly & Easily To Any Post, Pole Or Stringer.