Sietto 2 (51mm) Long Glass Cabinet Knob (Cirrus White) STO-LK-400 Every item by Sietto is handcrafted with tremendous attention to detail in their Chicago facility. All items are hand cut and arranged to fit the design, then kiln fired to 1500 degrees to fuse the individual pieces of glass together. Base colors available are Polished Chrome, Satin Nickel, and Oil Rubbed Bronze. NOTE: Each Sietto item is handmade. While containing all the colors of the piece shown, there may be slight variations in color and pattern size.