The Shimada steel shafts are undoubtedly the best performing steel shafts it its weight category. Many have converter from their Nippon Steel shafts (NSPro). One of the key reasons is that the K-7001 has a more penetrating ball flight and is very stable shaft despite it's light weight.
Item Application Tip Flex Length Tip Size Butt Size Weight (g)
Code mm　/　inch mm　/　inch mm　/　inch Raw Trimmed
236-I Iron Taper Ｒ 1,003 - 914 9.0 / .355 15.25 / .600 93 86
  #3-Wg   39.5 - 36.0
  Kick point              
    Ｓ 1,003 - 914 9.0 / .355 15.25 / .600 93 86
  LOW   39.5 - 36.0
                 
 
Item Application Tip Flex Length Tip Size Butt Size Weight (g)
Code mm　/　inch mm　/　inch mm　/　inch Raw Trimmed
233-Ｉ Wedge Taper Wedge 902 / 35.5 9.0 / .355 15.25 / .600 111.0 104
  Mid Kick   Flex          
 
Item Application Tip Flex Length Tip Size Butt Size Weight (g)
Code mm　/　inch mm　/　inch mm　/　inch Raw Trimmed
230-I Iron Parallel R-80 1,067 - 965 9.4 / .370 15.25 / .600 101　-　93  90 - 82  
  #2-Wg   42.0 - 38.0
                 
  Kick point   S-80 1,067 - 965 9.4 / .370 15.25 / .600 102　-　94  91 - 83  
    42.0 - 38.0
  MID              
      R-90 1,067 - 965 9.4 / .370 15.25 / .600 113 - 105 100 - 92
      42.0 - 38.0
                 
      S-90 1,067 - 965 9.4 / .370 15.25 / .600 114 - 106 101 - 93
      42.0 - 38.0
                 
      S-100 1,067 - 965 9.4 / .370 15.25 / .600 131 - 123 117 - 109
      42.0 - 38.0
                 
      X-100 1,067 - 965 9.4 / .370 15.25 / .600 132 - 124 118 - 110
      42.0 - 38.0