Based on this product's specifications, here are some alternatives and similar models
Straight router bit Wolfcraft 1 mm — single straight cutter for routing and grooving
Summary description:
Straight router bit by Wolfcraft with a 1 mm cutting diameter. Designed for routing, grooving and trimming in wood, plywood and similar materials. Single straight cutter profile provides precise, narrow cuts and clean edges for joinery, slotting and edge work. Suitable for handheld routers and routing jigs that accept straight bits of this diameter.