Suited for applications where vibration and thermal shock are potential problem, Stafford 90 Degree Mounting System features 2 stainless steel shaft collars with machined flat slots on O.D. that precisely fit into each other at right angle for stacking tubing, shafts, and components. Available in 3/8, 1, and 1 1/8 in. ID sizes, 2-piece shaft collars have smooth bores to protect shafts and evenly distribute holding power on tubes, and can be used to align sensors up and down.