Tetra ProSmith Wool Bore Mop .17Cal

• Industry standard 8-32 male thread (5-40 for .17 Cal. & .204 Cal.)
• 5/16-27 male thread (12, 20, & 28 and 410 Gauge)
• Effectively applies lubricants and cleaning solvents
• Absorbs contaminants
• Close tolerance specifications for perfect bore fit
• Durable and reusable