The Alpen SDS+ Rebar Drill Force X, 20.0mm x 600mm, is built for reliable drilling in reinforced concrete. This high-performance bit includes 4 tungsten carbide cutting edges and a progressive spiral design for efficient dust removal, while the dowel length indicator ensures precision in drilling depth. Size: 20.0mm x 600mm SDS-plus drill bit with 4 tungsten carbide cutting edges Progressive spiral design for enhanced dust removal Dowel length indicator for precise drilling depth