Replacement press-foot lifter lever for Singer type 875 sewing machine. (Beware, the Singer 875 sold in Middle-Europe seems different from Singer 875 sold elsewhere. In German speaking areas it is sold also as Singer "extra 155")
Technical
I recommend to use at least 4 perimeter layers for each types of perimeter in order to get sufficient sturdiness. I've used 40% infill, no support or rafts, printed in PLA.