... quality 2) Reasonable prices 3) Inner Diameter(mm):1 / 1.5/ 2/ 2.5/ 3/ 3.5/ 4/ ... 500 Volts Min. Indiv.Grade C-1 2,500 volts Min. Avg. 1,500 Volts Min. Indiv.ADVANTAGESAcrylic-F ... in your application. It is fully compatible with most magnet wire coatings such as polyester, acrylic, polyamide, polyimide, epoxyand ... both sealed and unsealed systems.AVAILABLE SIZE Inner Diameter(mm) 1, 1.5, 2, 2.5, 3, 3.5, 4 ...