Hardened stainless steel neck bushing from L.E. Wilson, designed in .001” increments with a .003” taper for precise neck sizing.
Bushing size can be adjusted for tighter sizing by flipping it over, with emergency use for hardened brass or fine-tuning neck tension.
Compatible exclusively with L.E. Wilson dies, not interchangeable with Forster or RCBS dies; selection based on loaded cartridge diameter or case neck wall thickness.