Pivot shoe--15-046 or 15-188?

I order a spiral bal and pivot shoe 28" 900/ and it recommend a 3/8 think shoe well shoe was to narrow 15-045 ( tilt window) I'm looking at my old one it measure 1 1/4w ,1/2 thick,and 2" long and there is some blue on it. My question is what shoe do you recommend ? These are the two I found on your web site but I'm not sure please help ( 15-188 or 15-046 ) also will these fit with the spiral balance 28" 900 series