Allen Key also called Hex Key or Allen wrench is an L-shaped tool used to drive bolts and screws with hexagonal sockets in their heads. Allen key has a long arm and a short arm design that offers extra reach on one end and extra leverage on the other. Made of the hexagonal rod of hard steel, this tool is essential if you are working with Allen head socket bolts and precision automation projects. Precisely-sized ends are chambered to slide easily into the fastener, reducing wear on the wrench and damage to the fastener head. This is a 2.5mm Hexagon Allen Key. The Material used is Chrom-vanadium steel So it is very strong. It is suitable for fitting the M2.5 Allen bolt.
2.5mm hexagon Allen key.
Material: Chrom-vanadium steel.
It is finished with Black phosphate.
1 x Allen Key 2.5mm