Flask set of 9 long black hexagon keys with ball 1.5-10mm. includes 9 metric ball end allen keys. measures: 1.5, 2, 2.5, 3, 4, 5, 6, 8 and 10mm. long key. with hexagonal ball in the long arm. easy to insert into screw head from various angles. for more efficient work and time savings. the long claw provides a greater transmission of the tightening torque and more accessibility. oxidized finish treatment provides excellent surface protection, greater precision at the tip. high quality steel, fully tempered. size engraved on the blade for easy identification. in plastic support. the sizes are marked on the bracket for easy selection. hole to hang.