... & satine 3.fit for: all kinds of class BL310 stainless steel Glass Curtain Wall spider 1.Material: 201,301,304,316; 2.Finishing ... .we have large store for big order of glass curtain wall spider9.OEM is acceptable model main material pictureBL3004arms center distance ... center distance: 80,100,120,160,200,220,250,300 stainless steel Glass Curtain Wall spider BL310