HILTI 2006301 SDS Max TE-Y percussion core hammer drill bit 45mm TE-Y-BK 45/290. Percussion core bit TE-Y-BK 45/290. SDS Max (TE-Y) percussion core hammer drill bit for cutting holes into concrete. Connection end: TE-Y (SDS-max). Base material: Concrete, Brick, Masonry, Sand-lime block. Working mode: Hammer drilling, Drilling only. Dry drilling with 20% longer lifetime than other SDS Max percussion core bits. Virtually dustless drilling when used with the optional TE DRS-Y dust removal system for Y-type combihammers. Easy socket cutting and drilling penetrations in masonry. Improved core bit geometry for up to 20% longer life. Through-holes for water piping, ventilation and other utilities. Concrete, Brick, Masonry, Sand- lime block. Hammer drilling, Drilling only.