Sorry it took me a few days to get these to you. I needed help to take the pictures with the tape measure. I hope the pictures are able to answer the questions regarding the elements. As far as I can tell from the original listing the Letter Size: LxH: 8mm x 6.5mm. The letter carrier size :(LxWxGroove Width) 68mm X 18mm x 8mm, can fit 7-9 letters, all depends on the size. They are still in transit. It shows that it has now landed. The delivery says March 14-March 25th so I don't have them to actually measure. It is an upper and lower case set and numbers. It is for periodic use. I am just starting out. I am not sure if steel or alum would be better. I have brothers who may be able to help with tapping. I am not sure which would be better as far as having you make it and ship or having drawings for a local shop. I'm not sure what the piece would cost of you to produce and ship, verses having it done in Central Indiana. I know shipping can be expensive from down under. I so appreciate you doing this. I love how the stamping looks on the ring boxes. What size is the font on your Kingsley letters? Are the letters lead? I've wondered how these type of letters hold up well and how they might be used in a non Kingsley machine. This is a whole new world for me.