It's easy to install the bronze square knob and Converter Fastener. 
The Converter Fastener will slide on and and stay affixed with tension to your typical cabinetry widths of 3/8 - 5/8 inch thick.   No drilling is needed.  The Converter Fastener has a screw already embedded.  This allows you to twist the bronze knob right onto the screw.  Note video: Video shows round knob being installed, but square knob will be shipped product, along with Converter Fastener.   No additional tools needed. No drilling. In seconds, you can install yourself.  
 
****No drilling.  Converter Fasteners are made with recycled aluminum and Made in the USA.
 
Any questions:  Phone or text: 845-419-1417. 
Cabinet knob will be sold with 2 bronze Converter Fasteners included.
 
**Woman Owned Business
 
If more cabinet knobs are needed, possibly search online for "bronze square knob" at www.BedBath&Beyond.com