2-Pack QuickZip Zip-Tie Multi-Purpose Combo Lock $10

Amazon has 2-Pack QuickZip Zip-Tie Multi-Purpose Combo Lock for $9.99. Shipping is free w/ Prime or on $35+. Product Description from Amazon: 21 inches long with a 4mm wide steel core. Control Method: Touch. Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit. Resettable combination. Connectable; Use separately or together.