Effortlessly transform your chuck into a swift, precise pen drilling tool with Rikon's Pen Jaws. The expansive jaw design and 'V' groove ensure a steady, secure grip on all pen blank sizes, guaranteeing a precise, centered hole each time. These jaws aren't just ideal for squaring up pen blank ends; their robust design also enables them to tackle larger and longer spigot work, with over 1.5 inches of solid grip for turning bigger squares or rounds. They come with a 'V' groove for vibration-free gripping, and can handle larger and longer spigot work, making them versatile for various tasks. The set includes one Rikon Pen Chuck Accessory Jaw Set.