Sold as each. The Reciprotools adapter fits all name brand reciprocating saws. Chuck it in like a blade and choose the tool of your choice. The adapters double tang design allows user to apply pressure up, down and in a circular motion. The 1/4" hex gives you the option to quickly change your tool or turn the tool in six different configurations for versatility. Use with other Reciprotool attachments. Manufacturer"s number: RCT-A10. Country of origin: United States. Distributed by Ace Trading.