ENHANCED STABILITY - Provides a robust 4.5kg (9.92lbs) counterweight, ensuring your iEQ30, ZEQ25GT, CEM25, or MiniTower mount remains stable during observation or astrophotography sessions. OPTIMAL BALANCE - Precisely balances your telescope setup, crucial for smooth tracking and high-resolution imaging, preventing unwanted vibrations and ensuring accurate celestial navigation. VERSATILE COMPATIBILITY - Designed specifically for iOptron iEQ30, ZEQ25GT, CEM25, and MiniTower mounts, guaranteeing a seamless fit and optimal performance with your existing equipment. ROBUST CONSTRUCTION - Features a durable build with precise dimensions (Outer: 4.6' / 116.84mm, Inner: 0.78' / 19.81mm, Height: 2.2' / 55.88mm) for long-lasting reliability in the field.