http://pastport.jp/user/senix/timeline/20V%20Brushless%201.2J%20Rotary%20Hammer Senix rotary hammer features an SDS-Plus chuck for quick bit changes and 2-mode operation for versatility. https://www.senix.co/products/volt-x2/20v-brushless-1.2j-rotary-hammer-419.html#list ja-JP