430-24 Len.: 24" (part# 430-24) This item features: -No. of Vials: 3. -Vial Positions: 1 45 , 1 Level, 1 Plumb. -Vial Material: Plastic. -Base Type: Flat. -Structure: I-Beam. -Body Material: Aluminum. -Type: Builders Spirit Level. -Price is for 1 Each.