Water drop wheel design: This mechanical brake knob uses a water drop wheel mechanism to provide smooth, responsive tension control during casting, delivering enhanced accuracy and distance with every cast. Compatibility: Specifically designed for DAIWA STEEZ series reels including For STEEZ A, For STEEZ A , For STEEZ A HLC, For STEEZ SV and For CT SV models, ensuring a precise fit and reliable performance for your fishing setup. Metal construction: Made from durable metal materials with a 130.5 thread specification, this brake knob offers lasting performance and reliable resistance even in challenging saltwater environments. Tension control: The mechanical brake system allows adjustments to spool tension, helping avoid backlashes and bird nests while maintaining casting performance across various lure weights. Use scenarios: Light lure casting in open water: Use the adjustable tension to control spool speed for longer, more accurate casts with small baits on STEEZ series reels. Medium to heavy lures in saltwater: Finetune tension to prevent overruns when casting swimbaits or heavier baits, improving consistency in windy or choppy conditions. Freshwater jigging and shore casting: Maintain stable spool tension to reduce tangles and achieve steady, reliable distance across a range of lure weights.