Corbin Russwin TH955 Pull-Thumb Piece Classroom Function Trim, comes Less Cylinder, Non-Handed and is for use with Corbin Russwin ED5000 Series Exit Devices. Corbin Russwin TH955 Pull-Thumb Piece Classroom Function Trim, can be used with rim, SecureBolt and vertical rod exit devices. Free Wheeling vandal-resistant design, Through-bolted to exit device, Beveled edges. *Comes Less Cylinder*