4 Sizes for More ChoiceThe cable staple insulated contains 540pcs U staple nail with 4 different sizes (Length x Width): 100 pcs 0.82” x 0.56” nail staples,200 pcs 0.69” x 0.44” nail staples,120 pcs 0.64” x 0.41” nail staples,120 pcs 0.67” x 0.36” nail staples. Sufficient quantity and various size can fully meet your different demands for fixing wire cable. Durable MaterialInsulated U staples are made of premium carbon with galvanized plated for excellent performance of rust &corrosion resistance and high hardness,expanding the service time. Insulated DesignThe bottom of the electrical cable staples is plated with insulated polyvinyl chloride,which prevents scratching the wire,resists abrasion and effectively blocks the circuit. Wide ApplicationMetal cable clip with plastic staple is recommended for TV wire cable,electrical equipment,lighting,coax cables,USB cable,computer power cord and more. Ideal for organizing and routing cables along baseboards or wood trim molding. Easy to UseInsulated U-shaped nails have no burrs and sharp tips,making them easy to insert. Straight legs for better fixation,prevent splitting the wood. Tow steps for installation,firm fastener for cable,avoiding to slip effectively organize electrical cable! Simple to use- place staple over cable and install the staples with hammer..