754010:33.33'(10.5m)*1/2''(12mm)
754020:21.6'(6.6m)*1/2''(12mm)
754030:21.6'(6.6m)*3/4''(19mm)
754040:43.3'(13.2m)*1/2'(12mm)
754050:43.3'(13.2)*3/4''(19mm)
