The Alpen SDS+ Rebar Drill Force X, 8.0mm x 210mm, provides reliable performance for drilling reinforced concrete. With 4 tungsten carbide cutting edges and a progressive spiral design for efficient dust removal, this drill bit also includes a dowel length indicator for precise drilling depth. Size: 8.0mm 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