Fit for some USA/Mexican made Jazz bass knob set screws and Fender American
Vintage style guitar saddle height screws adjustment, also used to drive bolts and screw which have a 1/16 inch(1.59mm) hexagon head socket Made of high quality steel, durable and long-lasting Inch size, designed for 1/16 inch(1.59mm) hexagon head socket Long arm: 45mm(1-49/64 inch), short arm: 16mm(5/8 inch)
