X tools allen key x 9 ball end setthe x tools ball end allen key set comprising of 9 allen keys with a ball end these are invaluable for getting at inaccessible bolts the set comes in a plastic holder for easy storage features 9 piece setincludes 15mm 2mm 25mm 3mm 4mm 5mm 6mm 8mm 10mm allen keysplastic holder includedbuy x tools tool sets from chain reaction cycles the worlds largest online bike store