Card guides are sold in package of 12 Each.
Screw-In types includes following mounting hardware
1) Screw, Flat Head, #4-40, 0.25" long, P/N : SC4-27#
2) Nut, Square, #4-40, P/N : NT4-7#
Custom lengths in Screw-In type Plastic and Aluminum guides are available on request.