Millard!

Go to product's and then click on the [spine/weight arrow selector] button .this should get you the info you need for selecting your arrow's .
You may also go to any arrow company website to get this info once you select the arrow brand that you plan to use . I have severel arrow site's once you decide which brand your going to use ,but www.bowjackson.com has a ton of info that will help you in the future as far as arrow's are concerned .

E-mail me any time if you need help

[email protected]

nubo