Description:Acrylic is a lightweight, tough plastic that offers transparency similar to that of glass.Good optical clarity Acrylic rods are durable than glass.Please allow a tolerance of +/- 0.2mm on all pieces.Suitable for lighting accessories, architecture, handicraft, model making, exhibition displays and hobby using. Specifications:Color: ClearDimension:500mm x 10mm x 5mm / 20inch x 0.4inch x 0.2inch(L*D)Light Transmittance: 93%Refractive Index: 1.49Heat Distortion Temperature: 85 CSoftening Temperature: 94 CTolerance: (+/-)0.2MMPackage Content: 2Pcs x Acrylic Half Round Rod