1.nylon sandblast coupling 2.1'',1/2''.3/4'',2'' 3.supply sandblaster,sandblast parts We ... and groove quick couplings (Brass, Aluminum, SS316, SS304, PP and Nylon) Guillemin coupling Aluminum and Stainless steel Safety clamps (conform to ... ) Pin-lug short shank Sandblast coupling (Dutile iron, Aluminium, Brass, Nylon) Steam hose coupling (Ground joint clamp) Universal air coupling (American ...