Spa hose. Flexible PVC (polyvinyl chloride). Suitable for use with spas, hot tubs, and whirlpools. For use with glue-onPVC Schedule 40 fittings. Maximum pressure: 60 to 100 psi. Maximum Temperature: 150 F. cUSPC/IAPMO/NSF Certified. Package Type: Bulk spool. Sold by the foot.