I have a DW745; this insert is advertised for other models but the manufacturer includes the DW745 on the instruction sheet.. Another reviewer explained why - when the DW745 blade is extended to its highest point the trunion hits the insert and pushes it out. The remedy is to route out a cavity matching the one on the original metal insert. Leecraft doesn't mention this but should for safety reasons or it should route the cavity in the manufacturing process. .