BALFOUR Abdominal Retractor, with ratchet bar, 2 pair interchangeable fenestrated side blades 2 1/4 in. (5.7 cm) and 3 1/2 in. (8.9 cm) deep and 2 solid center blades 2 5/8 in. (6.7 cm) x 1 3/4 in. (4.4 cm) and 3 1/4 in. (8.3 cm) x 2 3/4 in. (7 cm). 7 in. (17.8 cm) spread.