Romanian gheara 'claw' is really a cognate with ONorse klo: Germ. K

I found that the Romanian word 'gheara' eng. 'claw' is a cognates with
ONorse klo: (< PIE *klo:wo: kle:wo:). The OldNorse words is the source
of the English word 'claw'

for gheara /ghiara/ :

PIE gle:-(w)-ro > PAlb./Dacian? gle:-(w)ra > PAlb./Dacian? gla:(w)ra
(:) > ORom. gl'a-ra > [gl' > ghi /gi/] > Rom. gheara /gjara/


It's true that the Romanian word is an extension in -ro (or -lo?)
and the ONorse klo: reflects *kle:-wo: (but is not a big difference
and the meaning are identical: 'claw').
In addition we have the ONorse klo:-ra 'to scratch' with a r-
extension too: so Rom. gheara /gyara/ seems to be 'a scratch source'
at its origins...

I want to ask what is the PIE source of German Kralle 'claw' (because
here seems that we have an extension in l)?

Thanks in advance,
Marius

P>S> So gheara (DEX: Unknown Etymology') is another Substratual-
Inherited word in Romanian (or an old Gothic loan in Dacian?)