Sealey bench mounting premier pillar drills sealey pdm155b this 16 speed bench mounting pillar drill from sealey is ideal for the professional workshop it has a heavy duty aluminium bodied motor which gives long and reliable performance the electrical circuitry is protected with a no volt release switch to prevent inadvertent start up and the pulley cover is protected by a microswitch to prevent the drill operating when the cover is open an integral work light illuminates the drilling tabl