Single Monitor Add-On Kit: Add a 17"–40" monitor to your setup with this ergonomic pole mount add-on. Fits 17"–40" Monitors: Securely holds up to 26.4 lbs (12kg) with VESA 75x75 or 100x100. Ideal for flat, curved, or ultrawide screens. Pole Mount Add-On Kit: Suitable for poles with a diameter of 1- 3/8inch or 1.38” (35mm). NOTE: Compatible with AVLT Single 40 Inch Monitor Arm Pole Top Mount With USB-C USB-A Ports (AVLT-DM111-1 & AVLT-DM112-1), AVLT Laptop & 40 Inch Monitor Arm Pole Top Mount With USB-C USB-A Ports (AVLT-DM113-1 & AVLT-DM114-1) and AVLT Laptop & Dual 40 Inch Stacking Monitor Arm Pole Top Mount With USB-C USB-A Ports (AVLT-DM115-1 & AVLT-DM116-1). Boost Productivity: Easily add a second or third monitor for a dual or triple screen layout to maximize your multitasking potential. Flexible Adjustments: Enjoy ergonomic comfort with tilt, swivel, and rotation features to align your monitor with your posture. Effortless Tilt Control: On-the-fly tilt adjustment for up to 40” monitors to get the perfect viewing angle and accurate color every time.