SET INCLUDES: (1) .17 Cal. Rifle Bore Brush – Brass Core and Bronze Bristles (Benchrest Type)(1) Spear Tip .17 Cal. Jag Features: Bore Brush:Pro-Shot Bore Brush – Precision Engineered Design, Fit, & FunctionSuperior Stiff Bristles with extra thick fillPrecision Rifle #8-32 ThreadsMade in USA Jag: Pro-Shot System – Precision Engineered Design, Fit, & FunctionFits smoothly with Pro-Shot .27/U Cal. Cleaning RodsPrecision #8-32 ThreadsJag Stamped with size for easy identificationMade in USA Thread Information: All Pro-Shot Brushes and Jags are Mfg. with American Standard Threading Brush:.17 and .20 Cal. – #5-40 thread Rifle and Pistol – #8-32 threadShotgun – #5/16-27 thread Jag: .17 and .20 Cal. – #5-40 thread Rifle and Pistol – #8-32 threadShotgun – #5/16-27 thread More Information: .17 Cal. Rifle Bore Brush – Brass Core and Bronze Bristles (Benchrest Type)Pro-Shot manufactures superior bore brushes for shooters to withstand frequent use. Construction consists of a high-quality brass core and coupling with extra thick bronze bristles.Over the year these brushes have been used to set world records across the world. With exceptional bore cleaning ability, they are also a safe for your bore. All Pro-Shot Benchrest Bore Cleaning Brushes are specifically sized for each caliber/mm, with each brush being over-sized for extended life and maximum cleaning power! —Spear Tip .17 Cal. JagPro-Shot’s Benchrest Quality spear tip brass jag keeps the cleaning patch in place running through the bore. The most efficient and effective way to clean a bore is with a jag draped with a patch that completely covers the bore. This reduces cleaning time and provides a superior clean barrel. Pro-Shot designs each jag to match up with our cleaning rods for a totally smooth fit. With our vast work and knowledge on manufacturing parts over the years, we developed what we like to call the Pro-Shot System. The Pro-Shot System is a simple superior solution: Use our cleaning rod, jag, and cleaning patches for a perfect fit every time you clean!