These are 100-Pack Bulk Wholesale packs of USA Made Breeze Power-Seal hose clamps featuring heavy duty construction that can handle much more torque than generic imports. 

• Stainless Steel band and housing, Yellow Zinc Plated Screw
• Priced Bulk (100 per Pack) for best value
• 1/2" Wide Band
  
• Tighten using 5/16" Nut Driver