Tap Extensions come in sets.
Press Release Summary:

Original Press Release:
Whitney Tool Introduces New Line Of Tap Extensions
Whitney Tool Company, Inc., Bedford, IN, has introduced an extensive line of 5" and 9" long tap extensions that are available individually or in sets of nine popular sizes.
New Whitney tap extensions offer several outstanding features and benefits:
- Made from high quality tool steel for strength and durability
- Slim profile design fits into tight places not accessible to conventional tap extensions
- Compression cap for easy tightening, no wrench required
- Integral compression collet eliminates the need for bulky collet nuts
- Internal square drive for positive tap drive
- Eliminates the need for purchasing expensive extended length taps
For more information or the name of your nearest Whitney distributor, call 1-800-536-1971.