Mgtgbao 10pcs Titanium-Plated Pilot Drill bit for Hole Saw, Hole Saw Center Drill bit for Metal, Steel, Iron, Wood, Plastic

Features: ?Pilot drill bit for Mgtgbao metal cutting TCT carbide hole Saw series. ?Specifically designed for U shape and can be used for hard metal, stainless steel plate, square tube, iron, cast iron, wood, F.R.P and other general sheet metal?Note: Cannot be used for concrete, tiles and stone. ?Can be used with a cutting oil to further prolong bit life. Specification: Material: 6542 Steel Size? 6*68mm Color: Gold; Package: 10pcs Pilot drill bit set Note: The pilot drill bit is made of 6542 steel?making this pilot drill is very hard and brittle. Please keep the drill straight and do not twist or swing sideways.