TaylorMade Qi10 Driver Compatible Back Weight (Qi10 MAX and Qi10 LS drivers are not compatible) Weight: 20g (including screw) - Actual weight 20.2g (see photo 3) This is a parallel import and is a non-genuine, aftermarket part. A dedicated T20 wrench is required. We recommend that you have the replacement done by a professional workshop. Please also do so at your own risk. Thank you for your interest.