The GA021GM201 shares the same high-tech features as the GA021GD201—AWS, AFT, brushless motor, and electric brake—but comes with higher-capacity 4.0Ah batteries, extending runtime for heavier tasks. The slide switch offers easy operation for continuous grinding or cutting. https://www.industrywaala.com/product/makita-ga021gm201-40vmax-xgt-bl-aws-aft-cordless-100-mm-4-angle-grinder-anti-restart-function-electric-brake-slide