Klein Tools Square Set 93547SQVP 4 1 2 Inch Trim and 7 In Rafter Aluminum Layout Scribe (0 To 90 Deg Dual Reference Base Laser Etched Markings) Hammers and sustained cutting velocity under and sustained cutting velocity under heavy mechanical loads Micrograin Industrial Carbide Teeth: Specially formulated high density micrograin tungsten carbide tips maintain razor sharpness significantly longer against abrasive wood resins Complete 2 Piece Carpentry Set: Combines a compact 4 1 2" trim square and a standard 7" rafter square to cover fine finish and structural layout needs 0 to 90 Degree Angle Scale: Deeply etched protractor scale enables quick angle measurements and bevel transfers on jobsite framing