The Alpen SDS+ Rebar Drill Force X, 5.0mm x 210mm, is designed for effective drilling in reinforced concrete. With a high-performance SDS-plus shank and 4 tungsten carbide cutting edges, this bit features a progressive spiral design for quick dust removal, as well as a dowel length indicator for precise depth control. Size: 5.0mm x 210mm SDS-plus drill bit with 4 tungsten carbide cutting edges Progressive spiral design for enhanced dust removal Dowel length indicator for precise drilling depth