1,Pressure paint roller converts your airless sprayer to a pressure roller system 2,Even flow design prevents paint buildup and dripping 3,Internal feed system disperses paint evenly across roller 4,Forget constantly returning to the paint tray as with traditional paint rollers. Simply pull the trigger when you need paint and keep rolling 5,Roll many areas which are hard to reach without using a ladder Painting with a pressure roller has never been so easy! No more climbing and stopping to dip the roller in a messy paint tray again and again.Simply pull the trigger when you need more paint and keep rolling. Pressure roller is an Perfect choice when spraying is not possible. Product name:Self-priming roller for spraying machine accessories Product function:self-priming paint,etc life:according to your own use. Material: Metal colour: silvery Package Contents: 1 x Airless Paint Roller set W/ 30cm Bold extension rod Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.