Heat levels range from mild and medium up through medium-high, hot/extra hot and "blazing hot." Many listings describe their options as mild, medium, medium/high, hot/extra hot, or broadly "from mild to spicy."
DIY kits typically include reusable jars (sometimes skull-shaped or mini jars), funnels, a recipe book, measured spices/peppers for multiple recipes, and gloves for handling hot peppers.
Typical pairings include wings, BBQ and grilled meats; tacos, nachos and other Mexican dishes; eggs and breakfast items; burgers, stir-fries, pizza and pasta; seafood and chicken; and sweet-heat combinations like chicken & waffles or maple-glazed salmon.
Listed net/package weights vary widely across product details; examples from listings include 18 ounces, 0.34 pounds, and 36 pounds, reflecting single-bottle, multi-bottle, or bulk listings.