Review this Important Setup Information for proper installation and usage of the Slim Line Clamping System.This is the Chassis for the Slim Line Clamping System (small). It comes with the Bracket Adapter to fit AMAYA, XT, XTS, Bravo, EMT16 and EMT16Plus embroidery machines.The Slim Line is a spring loaded clamping device with interchangeable windows. Once installed, simply open the clamping window by rotating the handle down. Insert what you want to sew and release the clamp. Six window sizes are currently available for this chassis: 5.5" Round4.5" x 4.5"3.5" x 5.5"2.5" x 4"5.5" x 3.5"6.5" x 5"17124 Slimline.