2.Micro Ring(diehead threading/no threading)3.5*2.0*2.5 mm bottle/1000pcs4.0*2.7*2.7 mm bottle/1000pcs4.5*3.0*3.0 mm  bottle/1000pcsFlared copper ring3.4*3.0*6.0 mm bottle/1000pcs2.8*2.3*7.0 mm bottle/1000pcsTop grade Silicagel Ring4.0*2.0*2.7 mm bottle/1000pcs4.5*2.6*3.0 mm bottle/1000pcs5.0*3.0*3.0 mm bottle/1000pc

Micro Ring