The T72 Genuine Arrow insulated staples are made in the united states from quality steel material with a clear plastic insulator, suitable for a range of typical electrical cable installations. Available in 5 mm (13/64 inch) insulator height with 12 mm flat crown width and 9 mm (11/32 inch) insulator height with 15 mm grooved crown width and 22 mm staple leg length (19 mm for hard wood application variety). Genuine arrow T72 insulated staplesSuitable for a range of typical electrical cable installationsAvailable in 5 mm (13/64 in.) insulator height with 12 mm crown width or 9 mm (11/32 in.) insulator height with 15 mm crown widthQuality 22 mm steel staple leg length (19 mm for hard wood application variety)Compatible with the T72 insulated fastener wire tacker and other brands15mm300 per boxCarded