Discover the Heavy-Duty Piston Ring Compressor Tool (Model RC-4), perfect for auto mechanics and DIY enthusiasts. This tool accommodates piston sizes ranging from 2 1/8″ to 7″ with a depth of 3 1/2″, ensuring flawless installations. Crafted from premium high-carbon steel and featuring a smooth inner surface, it protects piston skirts and cylinder walls, promoting optimal engine performance. Ideal for rebuilding automotive, marine, and industrial engines, this tool is a must-have for anyone looking to enhance their engine repair experience. Order now for free shipping! .