Engine Cylinder Hone Tool Set, 1-1/8", 3" & 4" Hones, Red Case | 3/4"-7" Cylinde

【PERFORMANCE MAINTENANCE】The cylinder hones is made from structural-grade A36 steel with zinc coating, to ensure superior strength and durability, can effectively removes carbon, rust, glaze, imperfections, and wear on the cylinder walls, for optimal engine performance.