hexagon socket wrenchQty. in pack: 10.00 PiecesDrill bit casewith CENTROTEC interfacefor machining steel and non-ferrous metalsCentrotec HSS drill with replaceable drill bitsCentrotec HSS drill bit case, 10 pcs. with replaceable drill bitsDiameter 3 / 3,5 / 4 / 4,5 / 5 / 5,5 / 6 / 6,5 / 8 / 10 mm