The WorkPro 5-Piece Heat Shrink Tubing, black insulation material with anti-flaming and shrink over 50%, no metal plate. One sales package contains 5 pieces tubes, long 76mm. Includes: 1 pc 16mm tube; 2 pcs 8mm tubes; 2 pcs 4 mm tubes. Good usage to solve broken electrical wire problem. anti-flaming and environmental PE material,can protect person or animal from electricity energy. Heat shrink tubing has many useful applications. With the WorkPro 5-Piece Heat Shrink Tubing Set create electrical insulation and add protective coverage to wires, connections, joints, terminals, and splices. When used as a protective covering, heat shrink provides protection from abrasion, cutting, scuffing, and low impact situations.