• Material: Plastic tread over stainless steel ball bearing • Size: .250" ID x .896" OD x .250" thk • Fits: Guide Plate Assembly, Standard Trolley Assembly (OEM Part #001032) & Standard Dual Trolley Assembly (OEM Part #001319) • Model(s) This Part Fits: LFIIT, LFIIT-D, LFIIIT & LFIIIT-D