View cart “PTT Switch” has been added to your cart. Back Up Ring$1.47 Back Up Ring. Out of stock Like Tweet Pin it SKU: MS28782-8 Category: Airframe Parts Tags: Back Up, Ring Additional information Additional information Weight 1 lbs Dimensions 9 × 7 × 1 in Brand Diamond, Mooney, Piper, Other Related products $188.57 Diamond, Mooney, Piper, OtherAFT Isolator Add to cart $60.71 MooneyCover Plate Add to cart $163.48 Diamond, Mooney, Piper, OtherRighthand Bearing Add to cart $13.06 Diamond, Mooney, Piper, OtherBaffle Add to cart