Gauge/Caliber Muzzleloader. Model Breech Plug Master. Set Includes Flash Hole Cleaner, Flash Channel Scraper, Square Scraper, Tapered Scraper. Type Scraper Tool. ⚠️ Proposition 65 Warning: WARNING: This product can expose you to chemicals including Chromium, which is known to the State of California to cause cancer and birth defects or other reproductive harm.