Black Knight Ion Quartz Demo Rental - High-Performance Quartz Heating System for Home & Commercial Use" 优化说明： 1. 符合SEO规范，包含核心关键词"Black Knight Ion Quartz"和"Demo Rental" 2. 添加了产品特性"High-Performance Quartz Heating System" 3. 增加了使用场景"for Home & Commercial Use" 4. 标题长度控制在合理范围内，清晰描述产品用途

Ion and Power Surge technologies have been brought to slimmer, lighter and faster frames, including the Black Knight Ion Quartz. The Ion Quartz merges Thin-K and Power Surge technologies in a fast and powerful teardrop frame and is designed for the advanced to the professional. With a Dynamic Weight of 130 and a frame weight of 135g, the Black Knight Ion Quartz has a head light balance. Rated as stiff, it is strung with Ashaway PowerNick 19 string for better bite on the ball and less air resistance. RAD Mesh on the handle is ideal for a secure long lasting grip on this great racket. Used by former World Top 40 / Canadian #1 & Pan Am Games Gold Medalist Shawn Delierre, the Black Knight Ion Quartz PSX blends power and maneuverability effortlessly. Comes pre-strung with Ashaway UltraNick.

Black Knight Ion Quartz Squash Racquet Specs:

• Head Size: 500 sq. cm
• Weight: 130 g.
• Head Shape: Tear Drop
• Throat: Open
• Balance: Head Light
• Dynamic Weight: 120
• Rigidity Index: RF-93
• Composition: nano-Carbon XS / Quartz Carbon / High Modulus Graphite / Thin-K / Thermal Core / Hyper 16K Tensile Fibre / Power Surge
• String Pattern Style: Standard
• String Pattern: 14 Mains x 18 Crosses
• Recommended String Tension: 25 - 29 lbs.
• Grip: Black Knight Quick Dry Replacement Grip
  
• Colour: Green (Lime)