Bosch Template Guide Adapter Set is designed to enhance your routing projects by providing versatile compatibility and easy adjustments. This set includes the RA1126 Quick-Change Template Guide Adapter and the RA1100 Interface for Threaded Template Guides. The quick-change adapter fits Bosch RA-series template guides, which are sold separately and come in various sizes to suit different needs. Additionally, the RA1100 interface allows the adapter to accept Porter-Cable® and other common threaded template guides and reducer inserts that fit into a 1-3/8 inch counter-bore. This adapter set is compatible with a wide range of Bosch routers, including models 1613AE, 1617-, 1618-, 1619-, MR23-Series, and the plunge bases for Bosch palm routers, making it a flexible and essential accessory for precise template routing. Model Number: RA1129