The FEIN 35222967130 StarlockMax GROUT RENEWAL professional set contains seven blades for professional renovation of expansion joints to depths of up to 90 mm. Suitable for FEIN MultiTools and other common multi-tools with StarlockMax mounting, the set includes one 65 mm straight cutter blade, one 69 mm straight cutter blade in a very long design and five 60 x 30 mm straight universal cutter blades, providing a practical selection for demanding joint renovation work.