Excellent condition, very clean, ready to install. Complete with a copper gasket and 6 mounting bolts. 2.75 inches diameter high vacuum chamber conflat flange adapter with a 1 in diameter tube coupler (1 3/8" including threads), rotatable, made by MDC Hayward. 2 in tall, thick 1/2 in high quality stainless steel base. Surplus from a cryogenic laboratory. Total weight 407 grams.