Sharp roller ring part number:FROLPA070WRK3, This original roller ring fits many Sharp models.Over time the plastic can degrade and the wheels may fall off. This will prevent the glass turntable from rotating.Refer to the model compatability list below to decide if this is the correct part for your oven.Also refer to the detailed pictures and check the dimensions of your old roller ring before ordering.Ring Dimensions:Radius: 114mm (Measured from the the end of the wheel to the centre point)Wheel Diameter: 15mmWheel Thickness: 7mmHeight from the bottom of the shaft to the top of the ring:21mmShaft Diameter: 7mmColour: Black ( Original shipped ring may have been white)Please note that many Sharp ovens were originally shipped with a white roller ring. The new part supplied from Sharp is now black.Model compatibility list for theFROLPA070WRK3:R201(W)M, R202(BL)M, R202(G)M, R202(W)M, R205(W)M, R210A(B)M, R210A(BL)M, R210A(G)M, R210A(W)M, R211(B)M, R211(BL)M, R211(G)M, R211(W)M, R212(B)M, R212(BL)M, R212(G)M, R212(SL)M, R212(W)M, R230A(B)M, R230A(BL)M, R230A(G)M, R230A(SL)M, R230A(W)M, R232(SL)M, R234(W), R242(BL)M, R242(G)M, R242(W)M, R244(B)M, R244(G)M, R244(SL)M, R244(W)M, R24STM, R250A(B)M, R250A(BL)M, R250A(CR)M, R250A(G)M, R250A(W)M, R251(B)M, R251(W)M, R252(B)M, R252(BL)M, R252(G)M, R252(SL)M, R252(W)M, R254(SL)M, R254(W)M, R25STM, R2V15, R2V16, R2V18, R3A55, R3A56, R3E57, R3G17, R3G18, R3G56, R3G58, R3J58, R3S56, R630A(W)M, R641(G)M, R641(W)M, R642(G)M, R642(W)M, R64STM, R650A(B)M, R650A(W)M, R652(BL)M, R652(G)M, R652(W)M, R653(B)M, R653(G)M, R653(W)M, R654(SL)M, R654(W)M, R65STM