Dallas Specialty Debris and Well Traps insure the continuous operation of wate wells by protecting the evaluable pump suction area from debris, stones and other in-ground hazards. Manufactured of flexible PVC, these Debris/Well Traps provide permanent protection: they are impervious to water and any soil-borne contaminants. Just install over the well casing, and tighten with a Dallas Specialty series 300 Stainless Steel Hose Clamp for added protection against the dangers of rust and corrosion. Debris/Well Traps help keep the well pumping water and nothing else: Specify Dallas Specialty & Mfg. Co. Debris.