Milwaukee Tool 48-20-5495 Centering Bit for One Piece Core Bits

It's the starter pilot for Milwaukee one piece core bits. The carbide tipped centering bit mounts in the core bit and gives the hole a defined start point, so the core bit doesn't walk across the surface before the rim bites. One centering bit per pack.

Yes. The 48-20-5495 is specified for use with Milwaukee SDS-Max and spline one piece core bits to start the drilling. It is not a standalone drill bit, it works inside the core bit.

A one piece core bit can be run without a pilot once the hole is established, but on a fresh layout the rim has nothing to register against and the bit skates. The 48-20-5495 gives the exact spot start, which is why it's sold as the starting accessory for SDS-Max and spline one piece core bits. If you're drilling repeat holes to a mark, order one with the core bit.

The 48-20-5495 is a separate accessory, sold as a single centering bit. If your core bit came without a pilot or the original one is worn or snapped, this is the replacement part to order. Milwaukee part number 48-20-5495.

No. This centering bit is specified for one piece core bits on SDS-Max and spline shanks. Two piece core bit systems use their own pilot assembly that threads into the adapter, so order the pilot that matches that adapter instead.

Carbide tipped, and made in Germany. The carbide tip is what lets it bite concrete and masonry at the pilot point rather than dulling on the first few holes.