T25 staples feature a round crown design that secures wires without damaging them. The leading choice for low voltage wire applications, the T25 staple is an absolute boss when installing garage door openers, thermostat wire, doorbell wire, alarm systems and much more. Also works great on computer, CAT5/CAT6. RG6/RG9, COAX and phone cables. Genuine Arrow T25 round crown staples3/8 in. sizeQuality steel material for long-lasting durabilityRound 8 mm crownCompatible with the T25 wire and cable staple gun, T2025 dual purpose staple gun and other brandsCarded