Diadem SG Ultra String Set Featuring a 16x19 string pattern

Featuring a 16x19 string pattern and a 100 square inch head

75% compression compare to standard tennis balls

It is a step up from the Stage 1 Red Tennis Ball which provides a greater challenge as young players continue to develop their skills

the Axis 98 delivers the ultimate in control and spin potential

4 Pairs of wheels

Diadem SG Ultra String Set Featuring a 16x19 string patternDiadem SG Ultra is a signature Synthetic Gut designed to have incredible feel and durability at low cost. Utilizing a unique construction that minimizes fraying, the soft nylon allows for beginners and intermediate level players to take big swings without the risk of losing control. SG Ultra is a great entry level string in the full and hybrid setups. SG Ultra is often used in hybrids with polys such as Flash or Pro X or with nylons such as Impulse