Visual pack. B-series single cylinder deadbolt for exterior doors. Grade 1 security. Features new Snap-And-Stay hands-free installation. Deadbolt locked or unlocked by key from exterior or by interior turn piece. Dual option latch includes: 1/4" round corner and 1" circular drive-in latch, adjustable for 2-3/8" or 2-3/4" backsets. Strike: 1/4" round corner full-lip strike. meets BMHA Grade 1 security requirements. hardened steel pin in latch bolt provides added protection against sawing attack. 1" door preparation required for latch bolt while 2-1/8" required for deadbolt cross bore. Keyed alike in multiples of 4. Order full case of 4 for keyed alike cylinders. Lifetime mechanical warranty. No. B60NV505: Finish: Bright Brass, Cylinder Type: Single, Keyway: C Keyway, Backset Size: 2-3/8" or 2-3/4", Exterior Access: Key, Interior Action: Turn Unit No. B60NV609: Finish: Antique Brass, Cylinder Type: Single, Keyway: C Keyway, Backset Size: 2-3/8" or 2-3/4", Exterior Access: Key, Interior Action: Turn Unit No. B60NV619: Finish: Satin Nickel, Cylinder Type: Single, Keyway: C Keyway, Backset Size: 2-3/8" or 2-3/4", Exterior Access: Key, Interior Action: Turn Unit No. B60NV620: Finish: Antique Pewter, Cylinder Type: Single, Keyway: C Keyway, Backset Size: 2-3/8" or 2-3/4", Exterior Access: Key, Interior Action: Turn Unit No. B60NV716: Finish: Aged Bronze, Cylinder Type: Single, Keyway: C Keyway, Backset Size: 2-3/8" or 2-3/4", Exterior Access: Key, Interior Action: Turn Unit