Opera Hardware Set 7/8" Allen - Blue/Silver Precision-engineered mounting hardware designed for roller skate assembly and maintenance. This 7/8" Allen key compatible set features durable blue and silver components built to withstand repeated adjustments and heavy use. Ideal for securing boot plates, wheels, and bearings with consistent torque control. The corrosion-resistant finish ensures longevity in various skating conditions. Essential for skaters who demand reliable, professional-grade hardware for optimal performance and safety.