[DURABLE MATERIAL] Made of chrome vanadium steel + silicone for long-lasting use. [EASY INSTALLATION] Makes it easier to install piston rings quickly and conveniently. [MAXIMfit for U DURABILITY] Heat treatment ensures maximum durability and long service time. [PROFESSIONAL WORK fit for MANSHIP] Exquisite workmanship and professional manufacture for high reliability. [COMPACT DESIGN] Total length of 6.7" with a maximum opening of 1.6" for easy handling., Manufacturer: Jelquix