I would be interested to know the cost of producing 12off and 50off of the below drawing.

Material spec of the originals was EN1PB.

The single 3.3mm hole passes through the entire piece.
The two 3.3mm holes are for M4 grub screws and only go to the centre.

Ideally, I'd like to the two grub screw holes, and the central hole through the 8mm section threaded to M4, but I'm guessing that might put the price up somewhat ?

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Adrian