Do you need your driver to hit a little lower? Or possibly have a lower spin? This extra angle can help. Do you need to go higher or possibly have higher spin? This extra angle can help. THIS IS THE RARE LOT OF 3 ALL METAL, TOUR ISSUE TP DOUBLE ANGLE TAYLOR MADE SLEEVES 2* IDENTIFIED BY THE UNDERLINED R FIT ALL R11, R9, R11S DRIVER HEADS and FAIRWAY WOODS + ALL RBZ DRIVER HEADS. This will work for all RIGHT HAND OR LEFT HAND. TP or NON TP The listing if for just the 1 X .335 tour sleeve adapter only. This is a very rare tour only sleeve adapter that will simply double any adjustment an a standard r9 or r11 driver or fairway wood. This simply has double the angle and options. You can subtract or add 2 degrees to your loft. Example: Take a 9.5 driver and go as low as 7.5 degrees or as high as 11.5 degrees. You can also take a 15 degree 3 wood and go as low as 13 degrees or as high as 17 degrees. This is a dream come true for strong Long Drive competitors as they commonly like very low lofts. This is much stronger than the standard R11 adapters as these have more metal a solid metal neck as appose to the plastic R11 and RBZ neck. It is also great for seniors, ladies and juniors that need a higher ball flight. This 1st chart shows how to adjust the loft: This 2nd chart shows how to convert R9 to R11 or RBZ. Be sure to double these standard values: