Ki diferans ki genyen ant yon kle ak pens?

Yo gen diferan fonksyon

klejeneralman pa gen machwè pivotant,Kleyo prèske toujou yon pi bon zouti pasepenspou detachman ak pi sere nwa ak boulon paske yo bay pi gwo koupl pasepensepi yo gen mwens chans wonn oswa domaj Fastener.