Diadem Solstice Black Tennis String Reel ? 660ft of Spin-Engineered Comfort in a Soft Co-Poly Unleash massive spin and superior control with the Diadem Solstice Black Tennis String Reel. Designed for players who crave both comfort and performance, this 660-foot reel delivers a next-generation soft co-polyester string with a unique six-pointed star shape for maximum bite and spin. An upgrade from the iconic Solstice Power, Solstice Black features a black pigment for a softer feel and enhanced tension maintenance, thanks to Diadem's advanced extrusion process. Ideal for stringing up to 18 rackets, this reel is the go-to choice for high-performance players and frequent restringers seeking durability, spin, and comfort. Key Features: Soft Co-Poly Construction: Comfort-focused with excellent ball pocketing Six-Pointed Star Shape: Exceptional bite and spin potential Low-Friction Surface: Enhances snap-back for increased spin Improved Tension Maintenance: Longer-lasting performance over time Softer Feel Than Solstice Power: Thanks to the black pigment blend Specifications: Length: 660 feet / 200 meters Color: Black Material: Polyester Monofilament Shape: Six-pointed star Available Gauges: 18 (1.15mm): Best feel 17 (1.20mm) 16L (1.25mm) 16 (1.30mm) 15L (1.35mm): Most durable