Buying Three of them... @ $0.51??? Why not? and Free ()for me) shipping too. I covered that reason rather well too I thought... in a previous post.
When one gets full rather than having to deal with the toxic waste...
Just toss the whole thing and get a clean one...
3 are likely going to be all I will ever need as I am retired and no longer doing production electronics... So I bought 3...{Edit, Was 33} kinda like Christmas... real early.
Doc