Probrico Black Round Entry Door Knobs Keyed Alike - Secure

Our review of the Probrico (6 Pack) Black Round Entry Door Knobs finds it best suited for homeowners and small offices who need multiple keyed-alike locks for consistent access and a coordinated look. The strongest reason to buy is the combination of simple installation and ANSI Grade 3 construction, which promises durable mechanics and anti-sawing protection at a value price. For those replacing several entry or interior locks at once, the six-pack keyed-alike set saves time and delivers a uniform black finish that resists rust.

Key Features

• Keyed-alike convenience: One key opens every knob in the pack, which simplifies access management when multiple doors need the same key.
• ANSI Grade 3 construction: Built to exceed 200,000 cycles with a 5-pin brass tumbler cylinder for solid day-to-day durability.
• Adjustable latch: Latch supports 60mm (2-3/8in) or 70mm (2-3/4in) backset so it fits most standard door preparations.
• Fits common door thickness: Designed for doors 35 to 45mm (1-3/8in to 1-3/4in) thick, covering the majority of residential doors.
• Stainless steel and black finish: Stainless steel plated set with a black finish resists rust and maintains a consistent exterior/interior look.
• Security bolt design: Solid column security bolt offers anti-sawing protection to strengthen the lock against forced attacks.

Who It's For

This set is ideal for homeowners, landlords, or small business owners who need to replace or standardize multiple door knobs and prefer a single key for convenience. It suits exterior front doors, office doors, bedrooms and bathrooms where a consistent keyed-alike solution and a black aesthetic are desired.

It is less suited to buyers who need electronic access control, very high security commercial locks, or custom keyways. Also, customers who require a removable latch plate profile other than the supplied square plate should look elsewhere.

Pros & Cons

Pros

• Easy installation with no fiddly parts makes fitting quick for DIYers.
• Good value: six keyed-alike knobs reduce cost per lock compared with single units.
• Durable finish and ANSI Grade 3 certification provide reassuring build quality.
• Adjustable backset and common door thickness compatibility work with most homes.

Cons

• Some customers report mixed lock functionality and a thumb-turn orientation opposite typical locks, which may require adjustment.
• The latch plate is square and not removable, which can limit compatibility with some older door strike preparations.

Specifications

Package	6 pack keyed alike
Material	Stainless steel plated
Finish	Black
Backset	Adjustable 60mm (2-3/8in) or 70mm (2-3/4in)
Door thickness	Fits 35 to 45mm (1-3/8in to 1-3/4in)
Security standard	Conforms with ANSI Grade 3, 5-pin brass cylinder
Keys	3 combo keys per set (keyed alike)

Our Verdict

The Probrico black round entry knobs are a practical, cost-effective choice when replacing multiple locks and wanting a unified keyed-alike system. With ANSI Grade 3 hardware, a rust-resistant finish, and straightforward installation, it represents good value for typical residential and light commercial use, though buyers should check latch plate shape and be aware of occasional lock orientation or functionality reports.

Frequently Asked Questions

Are these knobs keyed the same out of the box?
Yes, the six-pack is supplied keyed alike so one key operates every lock in the set.

What door thickness and backset do they support?
They fit doors 35 to 45mm (1-3/8in to 1-3/4in) thick and have an adjustable backset for 60mm (2-3/8in) or 70mm (2-3/4in).

Is the latch plate removable to match older strike plates?
No, the latch plate is square and cannot be removed, so check your door strike before installing.