Walduba Engineering owns a variety of mag base drilling machines which are driven by a 220V power supply. The Silk HD100 is a compact, lightweight, positive feed variable stroke drilling machine that can be handled by one man. It is designed to drill holes up to 100mm in diameter in a variety of materials. The maximum stroke of the drill is 305mm. Drills can be utilised at any location in any position providing that there is a suitable place to attach the base. The largest in the WALDUBA range of drilling machines is the air driven Mirage HT40 Drilling Machine, designed to drill holes up to 100mm diameter with a 405mm stroke.