BUTTERFLY HOSE CLAMPS 9 mm W1 Article: bhc9w1 Clamps with plastic key for manual tightening. Execution options - galvanized and stainless steel. Each batch undergoes multi-stage quality control. Size * - Select -9W1 8-129W1 10-169W1 12-209W1 16-259W1 20-329W1 25-409W1 30-459W1 32-509W1 40-609W1 50-709W1 60-809W1 70-909W1 80-1009W1 90-110