QuadLock Finger Loop v4.1

This is an upgraded v2 version: https://makerworld.com/en/models/771500?from=search#profileId-707440 This one is 360 degrees rotatable and finger loop is printed in place, so it's more sturdy than v2. Assembly: press the upper part evenly on base wheel until it clicks. Push the lock pin, until it goes all the way in - it's a tight fit, so You must use a lot of force. Usage tips: turn the finger loop back and forth until You work it out to move without friction. The same goes with upper part and base wheel - do it before assembly. Needed additional parts: 24x2mm rubber o-ringDO NOT PRINT THE BASE WHEEL IN PLA - it will brak on assembly!Use PETG or other flexible filament for base wheel. Other parts can be PLA/PETG - other not tested. The loop was tested on iPhone 13 - base wheel printed in PETG, other parts in PLA - and it's sturdy enough for me not to worry, that it will break.Please test it before usage with heavier phones. UPDATE 4.1the o-ring was embedded more - now it s