Silverline Screw Extractor Set - 6pce - 3-25mm

No, this set contains only the extractors. You will need your own HSS or cobalt drill bits to create the necessary pilot holes.

GCr15 is a high-carbon chromium bearing steel known for its excellent hardness, wear resistance, and toughness, making it ideal for precision tools.

You can, but proceed with caution. Stainless steel is prone to work-hardening, so use plenty of cutting oil and keep your drill speed slow to avoid damaging your bits and the extractor.

This is a common risk if too much force is applied. Because these are made of hardened steel, they are difficult to drill out. Always start with light, steady pressure and avoid side-to-side force.

Yes, it can be used for wood screws provided the fastener is large enough to allow for a pilot hole without destroying the surrounding material.

The pilot hole is likely too large for the current extractor. Try the next size up or ensure the hole is deep enough to allow the extractor threads to seat properly.

Ensure you are using a sharp drill bit to create a clean pilot hole and that the bolt face is flat. If the bolt is hardened, you may need a cobalt drill bit to create the initial pilot hole.