You're mid-cut and the bit's gone. Happens to everyone running a Snapmaker. This 3-pack keeps you moving without a week-long wait for a single replacement. You get a tungsten carbide ball end mill, a flat end mill, and a 30-degree solid carbide V-bit — all 1/8" shank, all fit your Snapmaker 3-in-1 Original (TL4400) out of the box. Cut thin wood, carbon fibre sheet, or plastic with the first two. Carve wood, acrylic, or PCB traces with the V-bit. No guesswork, no compatibility headaches. Heads up: this is a special-order line. Call your local store before you hit add to cart and they'll confirm if it's on the shelf or how long the order takes