Dead Air Wolverine Thread Insert .35 Cal. 14x1LH - Century USA Made Guns Thread insert designed for .35 caliber with a 14x1LH thread pitch;Compatible with Century USA-made AK rifles;Works with Wolverine Collars (M14 Collar required);Optimized for use with Dead Air Wolverine suppressors;Provides secure fit and precision alignment;Expands the versatility of the Wolverine suppressor for specific AK modelstable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 7600 Product Group Code: 7600P Inactive: No Prop65 Applies: Yes Prop65 Cancer Harm: Yes Prop65 Chemical: Lead