The CE-1260B is a 3-axis clamp-on pole mount bracket for LCDs or PVMs. This mount is designed to fit poles with diameters ranging from 1 & 3/16" to 2 & 1/8". It can also be used with square tubing ranging in size from 7/8" to 1 & 1/2". The CE-1260B features both VESA 75 or 100 patterns and will safely support any LCD or PVM up to 11 lbs.

https://www.clintonelectronics.com/products/mounting/monitor-mounts/pipe-and-pole/ce-1260b/