JAZ High Speed Brushes have been specially designed for low weight and hig h speed mini-grinders (11000 R.P.M.) High removal capacity and efficiency at high speed performance Comfortable use and elimination of human fatigue Special design allowing access to angles and flexible performance on any surface M10 MULTI-FIT THREAD: Features an exclusive design and patented multi-fit thread valid for M10 x 1.5 and M10 x 1.25 systems JAZ High Speed Brushes have been specially designed for low weight an d high speed mini-grinders (11 R.P.M.) High removal capacity and efficiency at high speed performance Comfortable use and eliminati on of human fatigue Special design allowing access to angles and f lexible performance on any surface M1 MULTI-FIT THREAD: Features an ex clusive design and patented multi-fit thread valid for M1 x 1.5 and M1 x 1.25 systems