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 $146.03 DiamondVent Window Latch Assembly, DA40/42 Add to cart $60.71 MooneyCover Plate Add to cart $61.87 Piper, OtherFelt Strip Add to cart $63.29 PiperPA28 Wing Tank Screw Kit Add to cart