Sealey Left-Hand Spiral Drill Bit Set - 19Pc

The drill bits are made from 4241 HSS (High-Speed Steel).

The split point (118° tip) helps the drill bit bite into the workpiece quickly, reducing the need for center marking.

The drill bits come in 0.5mm increments, ranging from 1mm to 10mm.

Store the drill bits in the provided powder-coated metal storage case to protect them from damage and corrosion.

These drill bits are suitable for use on a variety of materials, including steel, aluminum, and other metals.

Reduce drilling pressure, check the drill speed, and ensure the correct bit type is used for the material. Try using a different bit from the set to extract the broken piece.

The left-hand spiral is designed to help extract broken studs and screws by turning in the counter-clockwise direction, which may unscrew the damaged fastener.

Ensure the drill bit is the correct size. Apply more pressure and use cutting oil. Check that you are drilling straight and not at an angle. Consider using a center punch to create a divot.

Reduce drilling pressure. Ensure the drill bit is the correct type for the material. Check the drill speed and adjust as needed. Consider using a different bit from the set to extract the broken portion.

Ensure the drill bit is turning in the correct (left-hand) direction. Consider using an extractor tool in conjunction with the drill bit.