1/4" OD (Outside Diameter) GR5 Titanium axle in 3.45". This axle has 6-32 threads on both ends of the axle. It has proven to fit most Mathews target bows with over 3.5" total limb width (outside edge to outside). It weighs in at 155 grains, which is close to a 50% reduction in weight compared to the factory. It comes in two pieces per package. It can be up to a 50% discount when purchasing with Titanium kit.