Pro Kennex HC2 Quad 175 Racquetball Racquet The Pro Kennex HC2 Quad 175 is designed for all levels offering great power and feel thanks to the String Suspension Technology. Headsize: 108 sq. in. / 696.77 sq. cm Weight (unstrung): 175 grams / 6.2 ounces Length: 22 in; Beam: 20 mm Composition: 100% Ultra High Modulus Graphite