Nice new ceramic chassis mount sockets for tube types such as 6L6, 6V6, EL34, 6550, KT88, etc, with slit-fork style gold plated brass contacts for good tight contact with tube pins. These fit in holes as small as 1 inch, mount from underneath the chassis, and have slots in mounting bracket for mounting holes approx 1 3/8 inch (35 mm) apart. Price is per socket. Limited quantity of this item available. This item is shipped from Britain, in North America or Asia please allow 2 to 3 weeks for delivery.