The holder can accommodate boards up to a size of 160x100 mm (or longer if you use longer thr. rods). This is done by moving and clamping a rack frame. The board is held in position by spring pressure, where the components are held in place by an antistatic pad on a clamping arm on the component side and then can be soldered. On the bottom of the frame there are some small anti-slip pads to hold the hole thing in position.Most parts are printed once, the frame, the jaws and the parts for the arm twice. All holes may need to be drilled out slightly. The handles can be either provided with M8 thread, in which the axes are screwed, or the axes can be clamped with grub screws in the handle pieces. On one side, a spring is inserted between base frame and jaw yet. There are M8 threaded rods used as well as a compression spring, various nuts, washers, lock washers, screws and set screws in size of M4 or M3. The threaded rods for the frame are provided on both sides with covering or protective caps. Furthermore, you can still stick some anti-slip-pads to the bottom of the frame.The antistatic pad is attached with double-sided tape on the holder. The pictures may say more than words can ...