Rata they come in different sizes. 2.5,3.0,3.5.4.0,4.5,5.0,5.5,6-7-8-9. no half sizes beyond 5.5 which is a pain. no worries about questions, you learn that way. it may be boring to some but I read most of the threads and continue to learn new things that I never thought of. kind of great forum for exchange of ideas.
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