An Interesting Electube Element Approx. Dimensions: 45 x 45 X 3 mm. Appears very lightly attempted. good usable condition, Any type 10, 12a, 50, 71a, 2a3, 274A, 300a/b will NOT fit into it. Strange layout from underneath. All 5 holes are equal in size. Slightly wider hole-to-hole space than common North American UX4 Pins. One SIDED-point will be "off contact" once a Solid Pin Fully entered the empty non-metal hole near-by it.