When working with concrete or concrete with rebars, the new hammer drill bit SDS-plus S4L has a 15 percent longer lifetime than its predecessor and surpasses competitor products even more clearly. This high-performance tool enables professionals to work particularly efficiently. CONTENTS: 6 x SDS-plus S4L hammer drill bits: 5.5mm, 2 x 6mm, 7mm, 8mm & 10mm x 160mm