These REIKU 36 & 70 mm Gripping Clamps have a stainless steel SCREW closure system. The Clamps are used to hold/attach the conduit and are used in conjunction with either a Middle or Sliding Jaw sets. The Jaw set snaps together over the conduit and then fits into a groove that is inside the Gripping Clamp. the Jaw rides in the groove similar to a bearing and allows the conduit to rotate in a radial direction inside the Gripping Clamp. The Gripping Clamps can also used to hold the POFHB-36/36 Spring Holder.