Allows Silverline multi-cutter blades to be used with other brands. Compatible with all Silverline multi-cutters, and with Bosch, Fein, Worx and Dremel multi-cutters. Not compatible with any quick-change system. Allows Silverline multi-cutter blades to be used with other brands. Compatible with all Silverline multi-cutters, and with Bosch, Fein, Worx and Dremel multi-cutters. Not compatible with any quick-change system.