Hardened stainless steel neck bushing from L.E. Wilson with a .003” taper for precise sizing adjustments.
Bushing size indicates the middle diameter; can be flipped for a tighter fit in emergency situations or for fine-tuning.
Compatible with L.E. Wilson dies only, and available in .001” increments to subtract .002"-.003" from the loaded cartridge's outside neck diameter for proper neck tension.