Rubber Invalid Ring, 18" $16.95 Rubber Invalid Ring - 18" (45cm) Quantity ADD TO CART SKU: PRE4218 Add to wishlist You must be logged in to access the wishlist feature. Login or Register Add Rubber Invalid Ring, 18" to your wishlist Priority Lowest Low Medium High Highest Comments × Add To Wishlist Wishlist Updated Rubber Invalid Ring, 18" has been added successfully to your wishlist. ×