Probrico Interior Door Knobs 6 Pack Keyed Alike - Durable Black Finish

In this review of the Probrico Interior Door Knobs 6 Pack, the bottom line is practical: this set targets homeowners and contractors who need multiple keyed entry knobs with a consistent key and a modern, durable finish. The package promises ANSI Grade 3 durability, a reinforced latch, and an anti-fingerprint black finish, which makes it an appealing choice for exterior and interior doors where keyed access is required. Installation is straightforward and the universal handing and adjustable backset mean these knobs fit most standard doors without fuss.

Key Features

• ANSI Grade 3 certified: offers a recognized baseline of durability that exceeds 200,000 cycles, so the knobs hold up under frequent use.
• Keyed alike locks: all knobs in the combo are supplied to open with the same key, simplifying access when several doors require identical locking.
• 5-pin brass cylinder: provides basic pick resistance and a nickel-plated brass key for durability and reliable key action.
• Modern black finish: an anti-fingerprint, wear-resistant coating that maintains appearance and resists rust in normal home environments.
• Adjustable backset and universal handing: fits doors with a 2-3/8 in to 2-3/4 in backset and door thickness from 1-3/8 in to 1-3/4 in, so it works for most standard door preps.
• Reinforced latch: built to resist impact and repeated slamming, improving long-term reliability at entry points.

Who It's For

This set is best for homeowners, landlords, and small contractors who need multiple keyed entry knobs with the convenience of a single key for all doors. It suits front, side, and interior doors where moderate security and a clean, modern look are desired. The easy installation and complete hardware make it attractive for DIYers replacing several knobs at once.

Those who need commercial-grade high security, electronic access, or highly tamper-resistant cylinders should look elsewhere; while the 5-pin brass cylinder offers pick resistance, some buyers reported mixed lock functionality and may prefer a higher security lockset for high-risk applications.

Pros & Cons

Pros

• Quality finish and build make the set look more expensive than its price, with a durable anti-fingerprint black coating.
• All knobs keyed alike simplify access and key management for multiple doors.
• Easy installation with included latch, screws, keys, and instructions reduces labor time for DIY projects.
• Adjustable backset and universal handing increase compatibility with common door preparations.

Cons

• Some customers reported inconsistent lock functionality across sets, so a small number may need attention or replacement.
• ANSI Grade 3 is solid for homes but not equivalent to higher commercial security grades for demanding security needs.

Specifications

Certification	ANSI Grade 3
Cycle rating	Exceeds 200,000 cycles
Cylinder	5-pin pick resistant brass
Backset	Adjustable 2-3/8 in to 2-3/4 in
Door thickness	Fits 1-3/8 in to 1-3/4 in
Finish	Modern black, wear and corrosion resistant
Package	Selected knobs, keys, solid latch, screws, instructions

Our Verdict

The Probrico 6-pack keyed interior door knobs deliver good value for homeowners who need a neat, coordinated set of keyed entry knobs with a durable black finish and easy installation. They are a sensible choice for residential doors where ANSI Grade 3 durability and basic pick resistance meet the need for security and style, though buyers seeking higher security should consider upgraded cylinders.

Frequently Asked Questions

Will these knobs work on left and right handed doors?
Yes. The design has universal handing, so the knobs fit both left and right handed doors.

Do all knobs come with the same key?
Yes. The combo pack is supplied keyed alike so a single key opens every knob in the set.

What door thickness and backset do they fit?
They fit doors 1-3/8 in to 1-3/4 in thick and an adjustable backset from 2-3/8 in to 2-3/4 in to match standard preparations.