The House Suction Irrigator 95mm 2.5x4fr is a surgical instrument used in otologic procedures for both suction and irrigation. The 95mm length provides adequate reach, making it effective for procedures in the ear canal or middle ear. The 2.5x4fr size designation refers to the dimensions of the suction tube, with a 2.5 French outer diameter and 4 French inner diameter, allowing for moderate suction and irrigation during surgery.