I found little description on line prior to purchasing.  There are four connection points at the base of the kettle light which hold the Freeda to the kettle.  They all look alike.  Three of the four have threaded bolts which loosen and allow access to the inside of the kettle.  The fourth is welded on and operates as a hinge so as not to let the heavy lens free fall; it can still fall open and break if the three adjustable retention bolts are not tightened.  The inside of the kettle is enamel hard white.  The brushed/satin nickle finish matched stainless steel appliances well.