1722 allen key sizes products are offered for sale by suppliers on Alibaba.com, of which wrench accounts for 42%, hex keys accounts for 18%.
A wide variety of allen key sizes options are available to you, such as steel, chrome vanadium steel and carbon steel.You can also choose from oem, odm and obm allen key sizes,as well as from chrome, natural, and black oxide allen key sizes,and whether allen key sizes is industrial, or diy.