Contact including a plurality of connectable parts

A contact, comprising:

• a first connectable part, being electrically connectable to a first connection object and including a tube or plate extending in a first direction, the plate having a cross section generally of U-shape, V-shape, C-shape, or L-shape, the tube or the plate including:
• a base including a first end portion on one side of a second direction, the second direction being orthogonal to the first direction;
• and
• a first wall extending from the first end portion of the base in a direction containing a component of a third direction, the third direction being orthogonal to the first and second directions;
• a second connectable part, being a plate and being electrically connectable to a second connection object, extending in the first direction, and including a first end portion on the one side of the second direction;
• and
• a middle part, including:
• a base contiguously connected between the base of the first connectable part and the second connectable part, the base of the middle part including a first end portion on the one side of the second direction;
• and
• a first sloped portion contiguously connected between the first wall of the first connectable part and the first end portion of the second connectable part, the first sloped portion extending from the first end portion of the base of the middle part in a direction containing a component of the third direction such that the first sloped portion slopes down toward the first end portion of the second connectable part, wherein
• the first wall of the first connectable part has a dimension in the third direction,
• the first end portion of the second connectable part is provided with a wall having a dimension in the third direction that is less than ⅛ of the dimension of the first wall;
• and
• the contact is configured to transmit high-frequency signal from the first connection object to the second connection object.