Built to better accept ultra sharp and durable H.B. scalpel blades, the Hollow Bone Knife from Tyto is a top-shelf replacement blade knife system — machined from strong, lightweight Grade 5 titanium, used in medical and aerospace applications. A partial carbon fiber handle improves grip between the thumb and forefinger, and the handle also fits size 60 and 22 scalpel blades. The Hollow Bone Replacement Blade Knife is ideal for performing light EDC duty and camp chores. It is 7 inches long with the blade installed and comes with five H.B. scalpel blades in a Tyto blade box. MSRP: $159.99. Contact: www.tytoknives.com