The 93367 is designed to complement all major central vacuum systems and is an ideal set of accessories for those concerned about black tools marking surfaces. The 1.25 in. inner diameter commercial grade vacuum hose is highly flexible with a smooth interior for superior airflow. Cen-Tecs trademarked arc relax strain relief system covers the last 14 in. of each end of the hose and prevents kinking increasing hose life. The premium combination nozzle has a wheel system, metal base plat and pivoting swivel neck that keeps the tool parallel to the surface of the floor for superior vacuuming. A 5 piece accessory set with natural fill dusting and natural fill upholstery tool is ideal for all above the floor surfaces. The 93367 is light weight making it ideal for cleaning above the floor surfaces, stair risers, while reducing fatigue. The 93367 is designed to be compatible with all major central vacuum brands including, Beam, Electrolux, Eureka, Vacuflo, Vacumaid, MD, Aerus, Cyclovac, Canavac, Honeywell, Galaxie, M and S, Imperium and Nutone installed with valves that have approximately a 1.50 in. industry standard opening.