The HV-109 cuff is a hose to inlet connector made of vinyl plastic. It comes standard on the H-130 and HS-130W hoses. It is suitable to use with most 1-1/4 inch standard central vacuum valves and hoses.
The W-328R is a Deluxe Metal Curved wand that is a friction fit. It can be added to the end of the HS130W 1-1/4" straight suction (no wire) hose by screwing it onto the hose. The W-328R has a vacuum relief built in to regulate suction and will fit most 1-1/4" tools.