... of insulation tubewall thickness of insulation tubeappearance1/4”6.35mmφ8(±0.5)8mmDouble embossed ... .1/4''&3/8'',1/4''&1/2'',1/4''&5/8'',3/8''&5/8'',3/8''&3/4'',1/2''&3/4''2 ... .O.D of copper tube and thickness can order according to the demand of customer.3.Length: 3 ... t hesitate to contact me! AmandaSkype: ivyzhao0819 1/4''+3/4'' 3m Twin Type PE Insulated Copper Tube with ...