Bosch Centering Device is designed to provide precise centering of router sub bases or template guides, ensuring accuracy in your woodworking projects. This device includes two parts for easy setup: simply insert the pin into the router collet chuck and place the cone on the pin. Then, adjust the sub base to be ly centered on the cone. It is compatible with a range of Bosch router models including RA1161, RA1162, RA1166, the 1617, 1618, and 1619E series, as well as MRF01, MRP01, MRC23EK, MRP23E, MRF23E, PR009, PR010, and PR011. This tool is essential for anyone looking to achieve precise and professional results with their Bosch routers.