Production Name: Microwave Turntable Plate, Size: 12.5" (318 mm), Shape: Round,Bottom Coupled Type: Y Shape, Material: Glass Design for Microwave Completely compatible for GE WB39X10002 WB39X10003 and Samsung 12.5" microwave plate Easy to install and fast replace, also so convient for cleaning Professional glass turntable plates for microwave, slip proof and high temperature resistance and high efficient cooking Key Parameters on it, overall diameter:12.5"(about 318mm),Support Roller Track Inner Diameter:about 8"(205mm),Support Track Outer Diameter: about 10-1/4 in(260mm)