Because the fiber optic alarm cable is plastic (not glass), you only need this hot knife and a splicing tool to make nice clean splice connections. The better the splice connection, the stronger the pulsed light traveling through the alarm cable. The stronger the pulse, the longer you can go with the fiber optic cable for each LightGard detector. Availability: Usually ships the next business day. Regular price: $35.95Sale price: $34.95 Thank you for visiting http://www.worldsecuritycorp.com, with over 100 products, the World's Largest Computer Security Store! You can also call us at 303-670-8800 M-F 8:30a-4:30p MST.