Number holder

During bike races it can sometimes be diffucelt to attached the race number on the bike. So I make an simple holder for use with Garmin holder. Two 5 mm screw are needed, then insert the bib in the slot of the holder. Are there no holes just make a hole in the bib.I took part of Chiang Mai gran fondo last year and use the bib from that as temple.I print in ABS when printing bike parts.