The FAAC 390972 Spline Shaft Collar with Mounting Bolts is a precision-engineered replacement part designed for FAAC S800H underground gate operators. This component ensures secure attachment and alignment of the spline shaft, maintaining smooth and reliable gate operation. Manufactured from high-quality materials, the collar resists wear and corrosion, providing long-lasting durability in both residential and commercial installations. As an original FAAC component, it guarantees perfect compatibility and performance, helping maintain the safety and efficiency of your gate automation system.