Using the Bessey ST290 telescopic drywall support is a breeze. First, do a rough pre - setting by using the telescoping and quickly locking inner pipe. Then, turn the support at the foam grip to do the final clamping. It can be used on slopes, just make sure to adjust the swivelable contact surfaces within the - 45° to + 45° range. When using, keep in mind that the maximum load it can handle is 150 kg, but this depends on the support size and length you're using. For maintenance, regularly check the special steel pipes for any signs of damage. Wipe the rubber PVC contact surfaces clean to keep the anti - slip feature working well. Also, make sure the additional locking of the release button is in good condition.