Compatible with the Ateco 400 coupler and Ateco 407 coupler, making it easy to switch tips without changing the pastry bag. 

Specification.

Base Diameter SizeSmall
Bottom Diameter11/16 Inches
Material                   Stainless Steel
Shape                   Round
Style                   Open Star
Tip Opening Size 0.14 Inches
Tip Size                   Standard
Type                   Piping Tips