The SPR-02 is handy locksmith tool made of light weight aluminum with non-slip knurled grips, pocket clip, and quick release brass collet. Use to remove knob retainer type knobs or levers. Conveniently stored in the handle are 4 unique hook extractors made of stainless steel,1 spiral non slip extractor, and an extra long depressor pin. Fits perfectly in shirt pocket for easy access. The SPR-02 is a must tool for every locksmith - See more at: https://spyroloc.com/products/spr-02/#sthash.W8ZxNat1.dpuf