Onward 6 in. x 3/4 in. Brass Flush Bolt 65BV - The Home Depot
Everbilt 6 in. Satin Nickel Square Corner Flush Bolt 13547 - The Home Depot
Flush Bolt, Extension Rod 12”, for Metal and Wood Doors
79-093 Commercial Door Flushbolt, 1/8" Offset, 11" Rod : SWISCO.com
Door Flush Bolt Latch Lock Slide Bolt Lock For Concealed Door 304 Stainless Steel Brushed Slide Latch For Wooden French Doors(2pcs, Silver) | Fruugo NO
3 Color Door Flush Bolt 10" Concealed Security Door Lock for French /Wood Doors | eBay