I am assuming without looking at the catalog that the #62 serving material is BCY's #62 braid. If so then this is what I use in .021 diam. I used to use the .025 but found the nocks were too tight with it. The .021 seems about right. Also use it when I tie a nock point on. Cover it with super glue and it lasts as long as I want it. Can't remember the length off hand but you could find it in either the Lancaster catalog or BCY's site www.bcyfibers.com . A spool of Polygrip in .020 is 75 yards so I would guess it would be about that.