Nockturnal Nocks Size Chart. We make nocks that work on arrows of 5 id classes: We supply lumenok solutions for most commercially available arrows, based on that shaft but cannot list every named model for all companies (arrow manufacturers do not share with us their arrow name schemes).

We supply lumenok solutions for most commercially available arrows, based on that shaft but cannot list every named model for all companies (arrow manufacturers do not share with us their arrow name schemes). 1/10 inch (2.5 mm) 1/8 inch (3 mm) there is still some variation within disciplines because it is very hard to closely replicate the exact thickness of a string. But in general, most target nocks will fit most target strings and most traditional nocks will fit most traditional strings.