Sealey 370w bench mounting pillar drills sealey gdm50b the sealey gdm50b 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 protectionthe drill has a morse taper spindle housing and can take a taper shank drill bit it is fitted with