These Clear Faceted Glass Sphere Prism Window Hangings measure approximately 20mm (3/4"). These Prisms are drilled horizontally at the top. These are not leaded crystal so they won't cast the brilliant rainbows quite as well as the much more expensive Austrian Crystal. We suggest using somewhat strong monofilament line, 10 lb. test should be adequate. NOTE: Photos are enlarged to show detail, 20mm is approximately the size of a U.S. Nickel. Many More Items Coming Soon from Alice's Looking Glass Jewelry!!! Payment and Shipping Information When buying one item, please use the "Buy It Now" button, if building an order please use the Shopping Cart to get our best Combined Shipping Rates. Combined shipping requires combined payment. When paying for multiple items, buyers must pay in one lump sum to receive discounted shipping fees. If your invoice looks wrong to you or you are unsure, PLEASE request an invoice and we will manually correct it for you. INTERNATIONAL SHIPPING: Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer?s responsibility. Please check with your country?s customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up ? do not confuse them for additional shipping charges. We do not mark merchandise values below the purchase price or mark items as gifts as US and International government regulations prohibit doing so. Thank you for stopping by Alice's Looking Glass Jewelry!