With 4 or 5 steps, these connectors are able to fit most common Shop Vacuums. Made of durable ABS plastic material.

4 Step Connector Ranges:

Diameter 1- Internal 21mm / External 25mm

Diameter 2- Internal 28mm / External 30mm

Diameter 3- Internal 31mm / External 34mm

Diameter 4- Internal 35mm / External 42mm

5 Step Connector Ranges: 

Diameter 1- Internal 22mm / External 27mm

Diameter 2- Internal 28mm / External 33mm

Diameter 3- Internal 30mm / External 35mm

Diameter 4- Internal 36mm / External 41mm

Diameter 5- Internal 45mm / External 50mm