Ektelon O3 RG Ruben Gonzalez Racquetball Racquet [Misc.] Material Construction: TTT with GraphitExtreme Power Level 2750-2950. This increases the sweet spot, creating a Sweet Zone, which means ultimate power on every shot! Weight Unstrung - 165-171g Head Size - 106 String Pattern - Power Ring 8 16x19 Ektelon replaced traditional pin-sized string holes with revolutionary giant O-ports, providing total string freedom for a livelier response across the entire string bed. Wallglider Bumper - A high performance bumper, composed of a low friction polymer, which provides maximum frame protection. This racquet ships pre-strung