Nice new ceramic chassis mount sockets for tube types such as 6L6, 6V6, EL34, 6550, KT88, etc, with round style plated brass contacts for good tight contact with valve 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. Offers on this item considered for quantity 50 or more. This item is shipped from Britain, in North America or Asia please allow 2 to 3 weeks for delivery.