Premium quality bolts designed in M12 × 1.25 × 25 mm (2.5 cm) size, specifically engineered for secure and reliable fastening of 105-135 gearboxes in leading 4-stroke power tillers. Compatible with 178F, 186F, 188F, and 177F models, this 5-piece pack ensures efficient installation, corrosion resistance, and optimal gear box performance, making maintenance easy and enhancing machinery lifespan and reliability.