The Preston™ Bone Access Needle from Laurane Medical includes a hard bone introducer and a drill. The introducer has a non-insulated sharp tip cannula and a trocar tip stylet. It is advanced through the soft tissue until the bone is reached. If used in combination with other devices during ablation procedures, special attention should be paid to sizes and compatibility with such ablation devices. The Preston™ Bone Access Needle is 11 gauge and available in four lengths: 6.5 cm, 8.5 cm, 10 cm, and 15 cm. For details and inquiries, you can email them at [email protected] or go to Laurane Medical's website.