Genuine matching Tern Wheelset. 20" (406)  28 spoke, 130mm and 74mm hub width.  Rear Wheel Cassette 8/9/10 Q-Release Black Hub supplied with spoke guard, Silver x28 Stainless Steel Spokes, Black Aluminium double wall Weinmann Rim.   Front Wheel Q-Release Black Hub (Cup and Cone - adjustable), Silver x20 Stainless Steel Spokes, Black Aluminium double wall Weinmann Rim. 

Recommended tyre width, 20 x 1.3" - 20 x 2.0"   If you are upgrading from single wall rims with rubber rimtapes, you will need to purchase good quality 16mm rim tapes to fit onto the new wheels instead.