Williams-Type Discectomy Retractors narrow blade, 6¾" (170mm) Back to Products     Catalogue #       390-320   50mm x 10mm, left 390-321   50mm x 10mm, right 390-322   60mm x 10mm, left 390-323   60mm x 10mm, right 390-324   70mm x 10mm, left 390-325   70mm x 10mm, right