This Sale Is For A Laboratory Surplus Klein Flange KF-50 50mm Vacuum Fitting End Cap Blank. This Item Is In Excellent Operational And Great Cosmetic Condition. Buyer To Pay $2.95 + $1.00 Each Additional For Shipping. Local Pick-Up here in Folsom, CA is welcome. Feel free to call me if you have any questions - Mark 916-761-6310.