High Pressure Drain Cleaner Use compressed air to unclog drains instead of chemicals Set Includes: Compressor, 11"W x 3"D x 10-1/2"H, 4 Attachments, Small, 1" dia., Medium, 1-1/2" dia., Large, 4-1/2" dia. and X-Large, 8" di Rubberized plastic, plastic and PVC