Those are the exact octopus clips that I have. When I used them for root lift, I used the mini-sized ones. They did a decent job. My concern is that since I have thin/fine hair at the roots, a larger clip would have a lot of empty space in it if I used one for that purpose.
Location: Texas
Type: 3b/3c (i), below shoulder length.
CO wash: A-O GPB LYY, Desert Essence Coconut, Oribe Silverati
Leave-ins: Curl Junkie Beauti-Curls, KCKT, cno overnight
Styling: BRHG, MGA Sculpting Gel, A-O Mandarin Magic Gel, LOTD AVG, LALSG, CJ Pattern Pusha
DT: Curl Junkie Deep Fix, Briogeo Don't Despair Repair!