Sealey 370w bench mounting pillar drills sealey sdm30 the sealey sdm50b is a 5 speed bench pillar drill suitable for light industrial agricultural and woodworking applications safety devices fitted include a no voltage release switch complying with insurance company approval for use in educational establishments and access to drive belts is denied during operation by mechanical protection sealey sdm30 pillar drill 5 speed hobby model 583mm height 330w230v