We produce circular spirit level vial Product Name:Plastic Circular Bubble Level VialProduct Item :EV-V914Specifications and Description:* Material:PMMA(Acrylic)* Colors: Various Different Colors Available(Green,Blue,Red,Orange,Clear,ect)* Accuracy: 30'-40' Item No.Diameter/D(mm)Height/H(mm)Level Sensitivity(')EV-V91435.21430'-40' Circular Spirit Level Vial