Malone Specialty Inc. offers Carbon Steel Metric Tubing to JIC Conversion Kits as well as 316 Stainless Steel Metric Tubing to JIC Conversion Kits, in sizes from 6mm up to 42mm. These Metric Tubing to JIC Conversion Kits, also known as Walterscheid Couplings, are available in various configurations including: DIN 3949 JIC Cones, JIC Nuts, along with the Metric Tubing Supporting Sleeve.