3 x SabreCut SCRKSQ2KR SQ2 89mm 152mm Bits and Magnetic Booster Screw Holder Compatible with Kreg Pocket Hole Jig Screws

Won't hold a screw on their own at all, without the attachment. On the first couple of weeks I had them everything would stick to them, now there's 0 magnetism unless you use the round attachment, it won't hold to the exact same screws (i bought a ton in bulk, still use the exact same screws)