Model code
Photograph the complete existing code.
A useful replacement record is a dimension set, not a guess.
Photograph the complete existing code.
Measure diameter or rail width.
Measure OD, length, block width/height and flange geometry.
Record hole count, spacing, thread size and center height.
Note open/closed, seals, adjustability, material and self-alignment.
Send the model, quantity, interface dimensions and application.