Question: .410 Lee Loader Part

I have an old Lee Loader for .410 Bore. There is a part missing..in the photo it is the metal cylinder shape at the left end next to the long chrome hull holder. If someone can tell me what the missing part is I'd appreciate it. In the 12g kit it is a nylon crimp starter in this hole, one of two. The .Attachment 164942410 I believe only has a 6 pt crimp and I have the nylon crimp starter for that. So if someone actually knows (rather than guessing), what the missing chrome part is please let me know. And of course, if you happen to have a spare one...

looks to be all there....IVE GOT the 12ga version and the 410 one out on permanent loan.
you have a base to sit hull on and punch out primer..with the bit on far right...
place on flat surface and poke primer into primer hole and GENTLY push hull down on top of it..the bit 2nd from left looks like the bit to slide down inside hull to push with...hollow on end if memory serves me right.... scoop in appropriate amount of correct powder...slide wad in next...push it down tip shot in next....this is done in the tube 2nd from right...or not depending on my mood...its just as easy to tip stuff in carefully using wee funnel anyway...
then you crimp start andthen the bit on far left goes over the top and down onto rim..and the bit inside it get gently tapped to close crimp...THATS THE TRICKY BIT...you HAVE TO have component column height perfect or crimp will either not close/pop open again or sink inwards.....you can get away with quite a rough crimp using break open gun.....
Im not sure which hole you believe isnt full...that kit looks complete.

So to be clear, the photo is not of my kit. The photo is of a complete kit. Mine is missing the shiny bit third in from the left. That is the bit I would like to identify. Cheers

ok will have a look at mine and see if can suss it out....

@Kiwi Sapper....can you suss it from kit I sent you???

the ONLY thing I can think of......its a base to pop primers into hollow on one end and flat on other to put new one in.... my kit here doesnt have one,(its not complete as sent my nearly complete one away to another fella to get him going)..I use loading block to pop primer into and flat tyle to push one back in.....
90% sure thats what it will be,THINK the rifle kits have one.....