

🔐 Lock in your security, unlock your peace of mind.
The Master Lock 142DCM is a compact, blue vinyl-covered aluminum padlock designed for indoor and outdoor use. Featuring a 40mm corrosion-resistant body, a hardened steel shackle for cut resistance, and a 4-pin cylinder with dual locking levers for enhanced pick and pry protection, it’s ideal for gym, school, or storage lockers. Lightweight yet durable, it offers reliable security backed by a Limited Lifetime Warranty.























| Brand | Master Lock |
| Item dimensions L x W x H | 0.1 x 1.57 x 2.52 inches |
| Lock Type | Key Lock |
| Material | Alloy Steel , Aluminum |
| Recommended Uses For Product | Security |
| Special Feature | Padlock , Padlock with Key |
A**.
Light and secure
5.0 out of 5 stars Perfect little gym locker lock — super small, lightweight, and clips right onto my AirPods case! I grabbed this Master Lock Blue Vinyl-Covered Lock specifically for my gym bag routine before work, and it’s exactly what I needed. No more digging through my bag for a bulky lock or worrying about losing the key — this thing is tiny, feather-light, and makes securing my stuff effortless. Why it’s a game-changer for me: • Tiny & lightweight — Fits in the palm of my hand and weighs almost nothing. I clip the included key right onto my AirPods case with the built-in loop, so everything stays together in one easy spot. • Easy to use at the gym — Slides through the locker latch in seconds, snaps shut, and opens just as fast. The blue vinyl coating is smooth and quiet — no loud clanking like metal locks. • Secure & durable — Holds my wallet, phone, watch, and keys safely while I’m lifting or on the treadmill. The vinyl keeps it from scratching the locker or my bag. • Perfect pre-work hack — I throw my bag in the locker, clip the lock on, and I’m in the zone in under 30 seconds. No hassle, no stress. I’ve used it every morning for the past couple of weeks and it still looks brand new. If you hit the gym before work and want a no-fuss, ultra-portable lock that you can literally attach to your AirPods case, this Master Lock is perfect. Way better than the big clunky ones they sell at the front desk. Highly recommend — best $8–10 I’ve spent on gym gear in a long time!
U**T
Great lock for a small price
This lock is perfect for my garage door hasp. The rubber covering on the lock itself will be great for keeping it from rusting like the other locks I have used in the past. Conveniently arrives with two keys. One for your keychain and one for the drawer or a 2nd ring. And of course, since it's a Master brand lock, you know it will last a long time and open easily.
I**!
Great For Indoor Storage Lockers!
Works great for my storage units in my building, and my locker at work. Good quality, as expected from Master, and the keys are easy to hold. I like how the keys are the same color as the lock. I have three colors of the lock, so I always know which key opens which lock. Will buy anytime I need a padlock for any indoor application.
B**H
Well worth the money
I like the way it’s made and how well it works. Nice and portable. Two keys are handy. Well worth the money.
G**!
Good product
Works great, comes with two keys. Read description on size. Was way smaller than I thought, but worked for what I needed it for.
N**.
Great gym lock
This is a solid padlock. I’ve been using it at the gym and it does exactly what it should, feels sturdy, locks smoothly, and holds up to daily use. The vinyl coating is a nice touch since it prevents scratching up lockers or other gear, and having two keys included is convenient so you’ve got a backup. It’s not meant for high-security situations, but for gym lockers or basic use, it’s perfect.
I**S
It's a nice lock
The perfect lock for her a gym lockers or for lockers in school! It's a good purchase
A**R
Great value
Working good, at gym locker