Each set of 35 mm Spigot Jaws is precision machined from a high-quality solid steel billet and comes with an easy-to-read instruction manual. Its heavy section jaws have a powerful grip for spigot (tenon) turning. With 30 mm (1-1/8") depth and a special serrated tooth form, these jaws securely hold your workpiece. Ideal for work that requires a long overhang or when hollowing into end grain.