▁stud s ▁( for ▁improved ▁tun ing ▁stability , ▁added ▁in ▁ 1 9 8 7 - 8 ), ▁a ▁spring ▁retain er ▁on ▁the ▁trem olo ▁block ▁( ag ain , ▁added ▁in ▁ 1 9 8 7 - 8 ) ▁and ▁a ▁pop - in ▁arm . ▁ ▁A ▁non - lock ing ▁version , ▁Edge ▁II , ▁appeared ▁on ▁the ▁V inn ie ▁Moore ▁signature ▁guitar ▁in ▁ 1 9 8 9 . ▁The ▁guitar ▁employed ▁a ▁low - fr iction ▁nut ▁and ▁lock ing ▁tun ers . ▁ ▁The ▁Edge ▁enjoyed ▁massive ▁success ▁in ▁the ▁late ▁E ight ies ▁and ▁is ▁still ▁the ▁trem olo ▁of ▁choice ▁for ▁players ▁such ▁as ▁Steve ▁V ai ▁and ▁Joe ▁Sat ri ani . ▁Tom ▁Mor ello ▁has ▁also ▁been ▁known ▁to ▁install ▁these ▁trem ol os ▁in ▁his ▁non - I b ane z ▁gu it ars . ▁▁ ▁In ▁ 2 0 0 3 , ▁the ▁pat ent ▁for ▁the ▁Original ▁F loyd ▁Rose ▁trem olo ▁exp ired . ▁This ▁coinc ided ▁with ▁the ▁release ▁of ▁a ▁newly ▁designed ▁pair ▁of ▁T rem ol os ▁from ▁Ib ane z , ▁the ▁Edge ▁Pro ▁and ▁the ▁Edge ▁Pro ▁II . ▁Ib ane z ▁mistaken ly ▁figured ▁that ▁all ▁the ▁F loyd ▁Rose ▁pat ents ▁were ▁available ▁for ▁use ; ▁however , ▁the ▁pat ent ▁on ▁the ▁Low ▁Profile ▁design ▁was ▁still ▁in ▁effect . ▁This ▁prompt ed ▁the ▁Edge ▁Pro ▁II ' s ▁replacement ▁with ▁Edge ▁III ▁which ▁fits ▁into ▁the ▁parameters