Skilcraft B3 Aviator

Metal 2+1 twist activation multi-pen. The twist action is continuous rotation without a stop. This is made to be a US military flight pen. One of my top picks for a low cost EDC multi-pen. The eraser cover is threaded. The refill access is a straight pull on the grip to expose the refills.

Variants: Only the one.

Refill is D1.