The YakAttack Convertible Knobs are a multi-purpose hardware knob compatible with most YakAttack products. Packaged as a 1/4-20 female knob, these knobs can simply be converted to 1/4-20 male knobs by installing a socket head cap screw into it! Converts from a female to a male knobFinish: BlackQty. per Pack: 6The YakAttack Convertible Knob is made in the U.S.A.