The Ball Cap is designed for use with turned newel stair posts such as the Tulip / Colonial Solid Newel and the Latvian Twist Peg Newel.

The Acorn Cap is designed for use with turned newel stair posts such as the Tulip / Colonial Solid Newel and the Latvian Twist Peg Newel.

The Square Cap is designed to be matched with square newel stair posts such as the Plain Square Solid Newel and the Stop Chamfered Solid Newel.

The Pyramid Cap is designed for use with square newel stair posts such as the Plain Square Solid Newel and the Stop Chamfered Solid Newel.