Key benefits - Flexible shaft with controllable spring action and a telescoping control limit allows quick switching between cylinders, delivering efficient cutting speed and precise finishing. - Works on a wide range of cylinder sizes: 2-1/4 to 7 inch (57-177 mm) work range for versatile use. - Easy setup and maintenance: includes 3 jaws and 3 grinding stones for straightforward installation and replacement. - Durable honing construction: made with metal alloy and silicone carbide material for effective material removal and a smooth cylinder wall. - Performance improvement: honing to a thinner, smoother cylinder wall promotes more complete fuel combustion, boosting engine efficiency and power output. Product details Specifications - Hone structure: Flexible shaft, controllable spring action, and telescoping control limit for quick switching between cylinders; supports efficient cutting speed and precise finishing. - Jaws and grinding stones: 3 jaws and 3 grinding stones; easy installation and replacement. - Work range: 2-1/4 to 7 inch (57-177 mm) diameter. - Materials: Metal alloy and silicone carbide. Honing effects - Removes imperfections and delivers a smoother cylinder wall for improved engine performance. Enhanced combustion efficiency - By honing the cylinder wall to a thinner, smoother profile, it promotes more complete fuel combustion, boosting overall engine efficiency and power output. Applications - Automotive engine rebuilds and cylinder finishing to improve bore quality. - Small engine maintenance for motorcycles, ATVs, generators, and other equipment. - Professional workshop or machine shop cylinder finishing tasks requiring consistent bore finish across multiple cylinders.