For Model Nos. 245, 250, Series 3 and later; 260,270, 280, Series 2 and later; Nos. 275, 285,370, 380, 395, 595, 850, 750, 232, 332, 241,246, 277, & 8504; Nos. 225 & 90199 FlexibleShaft attachments; Handpiece Nos. 235, 237