The TUSA replacement mask strap fits the following Tusa Masks :

 

M17 Concero

M28 Geminus

M24 Power View

M41 Freedom Quad

M210 Panthes

M211 Freedom One

M212 Freedom Ceos

M1001 Freedom HD

M1002 Freedom Tina

M1003 Freedom Elite

M1007 Paragon S

M2001 Paragon

M3001 Freedom Tri-Quest

 

The TUSA replacement Strap is a must for any divers save a dive box.