all fingers. hahaha..
but love to use the pinky sometimes.. but usually is the ring with index holding like a barre chord.
but using index to bend 2 frets or 2 half frets... woohooooo you feel the paaaaainnnn.. which is good.
Guys, try bending with your fingers (not your finger tips) for double stops..
dunnoe how to explain it, like erm.. use the underside of your ring fingers, grab the guitars and bend 2 or 2 half frets... the feeling is lovely.. I mean PAIN Lar.. hahah