FUNCTIONAL UTILITY TOOL: Including thumb stud and hex wrench, screws on to most any folder, suitable for blade thickness 3mm - 2.5mm knife.PREMIUM QUALITY: Made from brass and stainless steel which is solid and excellent corrosion resistance.EASY TO USE: Use these thumb studs to add onto a knife blade (like a Buck 110) to make it a one handed opener.POTABLE AND COMPACT: You can easily attach it on your buck knifes or other knife, it doesn't take up your extra room.GREAT EDC GADGETS: Such the useful EDC gadgets equipped with a buck knife help you to use your knife more confortable and safely.Colour:Photo ColorMaterial:Stainless steelPackage Contents:6 x thumb stud6 x screws6 x hex wrenchOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.