Stringway Cross String Guide HD Stringing Tool hiqua Makes it easy to pass the cross strings! Very convenient when stringing cross strings! You can pass the strings without fail! Durable aluminum construction Easily passes soft natural gut, hard poly, and nylon strings! Your fingers won't hurt anymore! No need to bend over and strain your back! Easily passes cross strings even with fine string patterns Reduces the possibility of failure! Doesn't damage the main strings, so no grooves are created!! Stringway Cross String Guides come in two types: LD and HD. Narrow gap between main strings = HD HD: 14 cross string distances within the main strings are 156mm or less (average gap between main strings is 10.5mm or less) White comb length = 168mm and 158mm (2 pieces included). Wide gap between main strings = LD LD: 14 cross string distances within the main strings are 156mm or more (average gap between main strings is 10.5mm or more) White comb length = 190mm Application...Hard court Type...String/Stringing machine Type...Racket accessories Type...Slinger bag