C.R. LAURENCE DL2210A18 CRL Aluminum 1/8" Offset Flush Bolt 7/8" (22 mm) Backset and With 5/8" (16 mm) ThrowSquare Nylon Tip with Beveled Corners Fits in 1/2" (13 mm) Square or Round StrikeRod Length for 12" (305 mm) Face Centerline Installation