The psm 18 li is a cordless lithium ion powered multi sander intelligently managing the interaction between the battery motor and gearbox the bosch syneon chip provides optimum power and maximum endurance throughout your project this type of sander is perfect for medium sized diy projects whether itd be working indoors or outdoors this is the sander thanks to its compact and lightweight design the psm 18 li is ideal for sanding wooden garden furniture door frames furniture with hard to