a: Finding ring; b: fundamental plate (best plate); c: manual pin; d: insulation plate (for better mould temperatures or hot runner mold); e: fasten screw; file: frame plate /A plate ( cavity if manufactured in stable), see below picture “We are quite satisfied with your administration & English communication, https://plastic-mould22211.blazingblog.com/18348657/what-does-plastic-mould-mean