StonyLab Plastic Joint Clips, 10 pcs 19mm Keck Clamp #19 Lab Keck Clips for 19/22 19/26 Joint Glass Standard Conical Interface Clip Ground Glass Joint Lab Accessory - Blue

Pack of 10, Size: 19 mm, fit joint size 19/22 or 19/26, Use for Glass Ground Joint, Will not corrode or scratch glass, Warranty: StonyLab ensures high quality products and premium customer service; If received damaged, please contact us immediately; We will solve it until satisfied