I found their choice of size and color interesting. I never tie the smaller kebari, I have a hard time seeing and tying #14 now days. Probably a mix of common sound advice and sales pitch.
For the topic / section banners that are not translated.
[As always, a better translation can be obtained copying individual sentences / paragraphs vs the whole page digital translation.]
March to mid April
Late April to May
テンカラ毛鉤の選び方 How to choose / select tenkara kebari