Woodys Gold Digger 60 deg. Traction Master Carbide Studs - 1.325in. Stud Length - 5/16in. Thread GDP6-1325-CS The ultimate push-through carbide stud 60 deg. carbide point for superb penetration and durability One-piece stud/head design eliminates the need for T-nuts Packs of 1.325in. and 1.450in. studs come with Woodys Big Nuts; .920in. length studs come in silver color 144 pack