The Alpen SDS+ Rebar Drill Force X, 6.5mm x 210mm, offers problem-free drilling in reinforced concrete. With its 4 tungsten carbide cutting edges and progressive spiral design for fast dust removal, this drill bit also features a dowel length indicator for precise depth control. Size: 6.5mm 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