Substrate holder for vertical galvanic metal, preferably copper, deposition on a substrate to be treated comprising a first substrate holder part and a second substrate holder part, wherein both substrate holder parts (1, 2) comprise an inner metal comprising part and an outer non-metallic part characterized in that the substrate holder further comprises i) At least one hanging element in each substrate holder part (1, 2) for mechanically connecting the substrate holder to a treatment container, ii) At least one first sealing element in each substrate holder part (1, 2) arranged between the substrate to be treated and the respective substrate holder part (1, 2), iii) At least one single second sealing element for the entire substrate holder arranged between the inner metal comprising part of the substrate holder and the outer non-metallic part of the substrate holder, iv) At least one fastening system for detachably fastening both substrate holder parts (1, 2) to each other for holding the substrate to be treated, v) At least one first contact element in each substrate holder part (1, 2) for forwarding current from an outer source through the hanging element to the at least second contact element, and vi) At least one second contact element in each substrate holder part (1, 2) for forwarding current from the at least first contact element to the substrate to be treated; wherein the fastening system further comprises at least a plurality of second, third, fourth and fifth fastening elements (18, 21 a,b,c), and a plurality of third recess elements in the first substrate holder part; while the fastening system further comprises at least a plurality of sixth, seventh, eighth, ninth, tenth, eleventh and twelfth fastening elements (20, 22 a,b,c, 23, 24, 26), and a plurality of fourth recess elements in the second substrate holder part; wherein the second fastening elements of the first substrate holder part are in conjunction with the fourth recess element of the second substrate holder part; and wherein the sixth fastening elements of the second substrate holder part are in conjunction with the third recess element of the first substrate holder part; wherein the second and sixth fastening elements (18, 20) are permanently fixed elements, which are unmovable in their position, that the seventh, eighth, ninth and twelfth fastening element (22 a,b,c, 26) are metallic chains, wherein the ninth fastening element (22 c) is a circular or rectangular metallic chain running around the site of the substrate holder, which is adapted to receive the substrate to be treated, wherein the eighth and seventh fastening elements (22 a, b) are two separated metallic chains running both linearly from said ninth fastening element (22 c) to the upper side of the substrate holder, wherein the seventh and the eighth fastening element (22 a, b) are each interconnected to the circular or rectangular chain by the twelfth fastening element, wherein all these metallic chains in the second substrate holder part comprise a plurality of consecutive oblong holes, which comprise at the one end a circular fourth recess element; and that the first substrate holder part comprises the corresponding metallic fastening elements as counterpart to the respective fastening elements of the second substrate holder part; wherein the term metallic chain refers to a metallic element, which is comprised of flexible metallic subunits, or a metallic element, which is comprised of one single piece; and wherein the tenth fastening element and eleventh fastening element serve the purpose of manually open and close the substrate holder by pushing or pressing the respective fastening element, which is more outside of the non-metallic outer housing. i) At least one hanging element in each substrate holder part (1, 2) for mechanically connecting the substrate holder to a treatment container, ii) At least one first sealing element in each substrate holder part (1, 2) arranged between the substrate to be treated and the respective substrate holder part (1, 2), iii) At least one single second sealing element for the entire substrate holder arranged between the inner metal comprising part of the substrate holder and the outer non-metallic part of the substrate holder, iv) At least one fastening system for detachably fastening both substrate holder parts (1, 2) to each other for holding the substrate to be treated, v) At least one first contact element in each substrate holder part (1, 2) for forwarding current from an outer source through the hanging element to the at least second contact element, and vi) At least one second contact element in each substrate holder part (1, 2) for forwarding current from the at least first contact element to the substrate to be treated;