The Alpen SDS+ Rebar Drill Force X, 12.0mm x 600mm, is designed for optimal drilling performance in reinforced concrete. This bit features 4 tungsten carbide cutting edges and a progressive spiral design for quick dust removal, while the dowel length indicator ensures accuracy in drilling depth. Size: 12.0mm 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