Adapter bushing used with clamp collar on C-HDM-401, C-HDM-403 and C-HDM-417 (sold separately) Allows clamping to the inner/upper poles on C-HDM-200 Series poles for higher support on holding peripherals like USB hubs, printers and more without losing strength and stability Adapts to 1.375" diameter round tube Gross Weight: 0.50 lbs Abbreviated Product Description: RPL, ADPTR, BSHNG, POLE, TELE, HDM, PVCR
