H1 Type:304 stainless steel case, 304 stainless steel roll ring, polycarbonate window(or glass window),316 stainless steel internal and connection, liquid fillable

H2 Type:304 stainless steel case, 304 stainless steel bayonet threaded ring, polycarbonate window(or glass window),316 stainless steel internal and connection, liquid fillable

I Type:Black steel case, 304 stainless steel roll ring, polycarbonate window (or safety glass window), brass internal and connection, liquid fillable

K1 Type:304 stainless steel case, 304 stainless steel roll ring, polycarbonate window(or glass window),brass internal and connection, liquid fillable

K2 Type:304 stainless steel case, 304 stainless steel bayonet threaded ring, polycarbonate window(or glass window),brass internal and connection, liquid fillable