Technical Specs Item Helical Insert Type Free Running Material 304 Stainless Steel Internal Thread Size #10-32 #10-24 Thread inch fine Thread Direction Right Hand Length 1D,1.5D,2D,2.5D,3D Dimension description: for example: #10-24 x2D #10-24 means the thread diameter is#10 2D indicates that the maximum length of the Helical Insert after installation is 2 times of the diameter