Major Tech Hex Key Sets are made of high quality steel and have long or extended arms to allow you to reach into small spaces for adjustments. They should have chamfered edges on the drive ends to allow them to be inserted easily and avoid stripping the fasteners. BPHK0308 have ball ends on one side, allow you to drive at an angle off-axis to the hardware, which can be helpful for tight places. Major Tech Hex Key Sets comes with an indexed storage caddy that allows you to keep you wrenches together, organized, and sized appropriately. Features : Professional quality chrome vanadium Bevelled ends for easy screw access Supplied in easy to select protective case 9 Piece Set – 1,5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm Hexagonal keys with ball point ends on the long arm and conventional hex on the short arm