This is the attachment for my chainsaw lanyard, a semi-permanent attachment. The threads were doused with threadlock way back when, and it takes tools to wrench it off.
It only comes off during upgrades to the chainsaw lanyard. This little biner, because it is the atachment for the chainsaw lanyard, has gotten more use than any other biner I own. It needs to retire, or be put out to stud or proper burial or whatever. It has served me tirelessly and to utter perfection.
