The difference between the Speakman 2251 and 2252 are the number of sprays and flow rate options. The Speakman 2251 offers 64 customizable sprays, while the 2252 offers 48. Both shower heads feature a 2.5 GPM flow rate, but the Speakman 2252 offers a 1.75 GPM option making it a "low flow" option.