The Alpen SDS+ Rebar Drill Force X, 5.5mm x 160mm, offers problem-free drilling in reinforced concrete. Featuring 4 tungsten carbide cutting edges, it includes a progressive spiral design for rapid dust removal and a dowel length indicator for exact drilling depth. Size: 5.5mm x 160mm SDS-plus drill bit with 4 tungsten carbide cutting edges Progressive spiral design for enhanced dust removal Dowel length indicator for precise drilling depth