The Master Wholesale 4" Turbo Stone Grinding E-Cup features a steel back, and is a great value on a high quality diamond and metal bond matrix cup. Some people tell us this works as well, and lasts as long as some of our more expensive cups. It is designed for use on granite, marble, and other hard stone material and works on concrete as well. Accepts a 5/8"-11 threaded spindle.
|Manufacturer Part Number||ST0104|
|Wet or Dry||Wet or Dry|
Answer: Yes, this is threaded for 5/8 .in-11 spindle, most 4-1/2 .in Makita grinders are fitted with that size spindle. What Model are you using and I will double check.