Nudo drive rivets are ready for immediate use. They require no special prep time or special tools. Simply drill a hole, insert a rivet, hit the pin or rivet head and you have a permanent, long-lasting, professional appearance. USDA accepted drive rivets are specified for panel installations and all types of fasting jobs in building, construction, transportation, food processing, kitchens, cold storage, laboratories, baths, restrooms, toys, vinyl shutters, marine, aviation, agriculture and where sanitation is a must.