Lisle 3-1/2″ to 7″ Piston Ring Compressor (20500) is a high-quality tool designed to make installing piston rings on engines a simple and efficient task. This versatile compressor is adjustable to fit a wide range of piston ring sizes, making it suitable for various engine types and applications. KEY FEATURES AND BENEFITS: Adjustable Design: Accommodates piston ring sizes from 3.5 to 7 inches, ensuring compatibility with a variety of engines. Spring Clutch: Provides a secure and reliable grip on the piston rings, preventing slippage during installation. Durable Construction: Built to withstand the rigors of professional use, ensuring long-lasting performance. SPECIFICATIONS: Brand: Lisle Model: 20500 Type: Piston Ring Compressor Material: Steel Color: Black Adjustable: Yes Tapered: No Piston Ring Size Range: 3-1/2″ to 7″ Weight: 0.88 lbs. Dimensions: 7 x 5.75 x 3 inches HOW TO USE: Measure the piston ring diameter: Determine the size of the piston ring to be installed. Adjust the compressor: Loosen the adjustment screw and adjust the compressor to match the measured diameter of the piston ring. Insert the piston ring: Place the piston ring into the compressor, ensuring it is properly seated. Tighten the adjustment screw: Securely tighten the adjustment screw to hold the piston ring in place. Install the piston: Carefully slide the piston into the cylinder, ensuring the piston rings are properly positioned. BENEFITS OF USING THE LISLE 3-1/2″ TO 7″ PISTON RING COMPRESSOR (20500): Efficient Installation: Quickly and accurately install piston rings without the risk of damage. Versatility: Suitable for a wide range of engine types and piston ring sizes. Reliability: Durable construction and reliable performance ensure long-lasting use. FEATURES: Easy to Use: With a simple adjustment mechanism. Suitable for a Wide Range of Engines: Ensuring broad compatibility.