Based on this product's specifications, here are some alternatives and similar models
Drill bit Proline 11 mm x 142 mm model 78110K, 1 pc
Summary description:
Single metal drill bit Proline 78110K with 11 mm diameter and 142 mm overall length. Designed for drilling metal and similar materials, this straight shank bit suits hand drills and drill presses. Provides a single replacement or spare for workshop, construction, maintenance and installation tasks where a specific 11 mm hole is required.