Johnson's 3800 I-beam level was designed to be durable and easy to use - so much so that it has been the standard in the industry for over 30 years
Flexible facepiece material provides an excellent face-to-respirator seal which improves fit and comfort
Stainless steel with inside/outside reading
snap lock hole saw mandrel with 3/8" hex arbor
smooth shank
9-Inch Contractor Magnetic Torpedo Level Tap Johnson's 3800 I-beam level was9", Contractor Magnetic Aluminum Torpedo Level, 3 Vial, 1 Piece, Full Length Oversized Cast Reinforced Aluminum Frame With Exclusive Computerized, Numerically Controlled Machined Edges, Large, Top V Groove Accommodates Pipe & Conduit, Extra Strong, Full Length Magnetic Edge, 360 Degree Acrylic Yellow Barrel Vials, Surround View White Polymer Surrounds Vials For Easy Viewing, High Impact Plastic Covers, Level Vials Top Reading.