Shipping to contigious US: Free orders over $99, $6.95 orders less than $99
Accepts #2 burners
Bottom inside diameter: 1-11/16"
Top inside diameter: 1-3/16"
Brass Lamp Collars fit onto glass lamp neck, providing secure support for #2 lamp-burners. Attached traditionally with plaster-of-Paris, can be attached with epoxy. Lamp-collar has interior threads for a #2 lamp burner to screw into.