Machine swage terminals for masts equipped with T-ball fittings. T-ball fittings are used on some masts to provide additional movement to shrouds for better alignment and are designed to lock into place, but move fore and aft as the rig changes. Alexander Roberts terminals are constructed using 316 stainless steel. This alloy balances strength and corrosion resistance, making it an ideal choice for standing rigging. Each terminal is sized to the wire diameter and requires professional installation using a compatible machine swager. Check to confirm that the T-ball size (referenced by the Mfg #) is compatible with the backing plate installed on your mast. Key Features T-ball fittings provide freedom of movement to better align rigging (requires that the mast be installed with corresponding backing plate 316 stainless steel construction for corrosion resistance and strength Available in 9 commonly used wire diametersTSW6-0 is the older style terminal and features a thin shoulder Requires professional installation