Lasts up to 3 times longer than SDS plus-3 tile drillDrilling in reinforced concrete is demanding and it is usually very tiring for the drill. Ordinary drills with two cutting edges get stuck in the rebar and eventually break. The EXPERT SDS plus-7X has an advanced design with four inserts and an all-carbide head that is made in one piece from one of the hardest materials of all: It does not jam and is not weakened by the impact.Thanks to Bosch Carbide Technology and the all-carbide head, the EXPERT SDS plus-7X lasts much longer than ordinary hammer drills. It efficiently punches through rebar, so you don't have to pause to realign the tool or change drills when you're in steel.For builders who regularly drill into concrete and reinforced concrete, such as for fittings and installations, the Bosch EXPERT SDS plus-7X hammer drill offers unsurpassed performance, reliability and longevity. It is the number one EXPERT accessory for SDS plus hammer drills.Fits all SDS plus hammer drills.