Ready for 3d printing ; Two versions ring : normal and hex ( as well as soli and hollowed versions each file);sizes 19, 20 , 21;

• Volumes :
• normal version :
• solid variation - size 19 : 1099mm3; size 20: 1137mm3; size 21: 1174mm3;
• hollowed variation - size 19: 636mm3; size 20: 659 mm3; size 21: 682 mm3; thickness - 0,8 mm
  
• HEX version :
• solid variation - size 19 : 1092mm3; size 20: 1129mm3; size 21: 1167mm3;
  
• hollowed variation - size 19: 645mm3; size 20: 668 mm3; size 21: 692 mm3; thickness - 0,8 mm