Dead Air Suppressor Xemax Adapter Xemax adapter for HUB Pattern 1 3/8-24 Compatible with Nomax 33 and Primal suppressors;HUB Pattern 1 3/8-24 threading;Material: 4140HT Chromium-Molybdenum heat-treated steel;Finish: Nitride black for enhanced durability;Self-aligning taper system for consistent bore alignment;Optimized for big bore calibers including .33 XC, .338 Lapua Mag, 8.6 Blackout, .45-70, and .450 Bushmaster;Weight: 2.08 oz;Length: 1.135 inches;Diameter: 1.540 inches;Designed for Xemax muzzle brakes and adapters only (not cross-compatible with Xeno systems)table.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