Does this lock have any harmful chemicals Prop 65

Don’t put it in your drink or cook with it, if it mixes into your drink or food it could make you sick but I believe the report said you’d have to do that 834 times to have a negative affect on you. But on a side note I read just the paper from the Prop 65 rule could make you violently sick if you eat all the paper in just one setting.

Is it for outdoor use?

It hasn't fared well for us. We have an older one which held up for about 3 years before needing to be replaced. The lifetime warranty allows you only one replacement, so it really isn't a lifetime warranty at all. If you live near the beach, consider yourself lucky if it works for 2-3 years. That said, it is for outdoor use, just expect to lubricate frequently especially after rain or if you live near saltwater.

What's the diameter of the shackle? I need to make sure it can fit through a hole in a security box.

5/16"http://www.allpadlocks.com/cgi-bin/ez-catalog/product_images.cgi?account=X380790;product_id=M178;image=images%2Fcatalog%2F178sketch.jpg

Lost the change key -- how to reset the combo without it?

you can just use a small screwdriver to push in and change the combo while doing so. The Key really just holds down the bar inside for you.

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Master Lock 178D Set Your Own Combination Lock, Black, 1 Pack

Product ID: 57248710

Details

Brand
Master Lock
Item dimensions L x W x H
33 x 51 x 84
Lock type
Combination
Material
Zinc
Special feature
Resettable

🔒4-digit customizable combo

🌦️weather-resistant solid body

🛡️hardened steel shackle

€ 61.52

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Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔐 Own your security with style and smarts!

COMPACT YET STURDY - Slim 2-inch body fits perfectly on lockers, gates, and gym equipment without bulk.
CUT RESISTANT SHACKLE - Hardened steel shackle offers strong resistance against casual bolt cutters and theft attempts.
SMART LOCKING MECHANISM - Won’t lock unless combination is scrambled—ensuring your lock is always secure.
BUILT TO WITHSTAND THE ELEMENTS - Durable zinc body and weatherproof design keep your lock reliable rain or shine.
PERSONALIZED SECURITY ZERO KEYS - Set your own 4-digit combo for effortless, keyless access—never fumble for keys again.

The Master Lock 178D is a versatile, resettable 4-digit combination padlock featuring a hardened steel shackle and weather-resistant zinc body. Ideal for gym lockers, gates, and school use, it offers customizable security without keys, a smart locking mechanism that prevents accidental unlocking, and durable construction designed to withstand outdoor conditions.

Specifications

ASIN	B0009V1WMA
Best Sellers Rank	124,888 in DIY & Tools ( See Top 100 in DIY & Tools ) 281 in Combination Padlocks
Brand	Master Lock
Colour	Black
Control Method	Touch
Controller Type	Hand Control
Country of Origin	China
Customer Reviews	4.6 out of 5 stars 13,932 Reviews
Finish	Painted
Included Components	1 padlock
Item Dimensions	33 x 51 x 84 millimetres
Item Type Name	Set Your Own Combination Lock
Item Weight	0.3 Pounds
Item dimensions L x W x H	33 x 51 x 84 millimetres
Lock Type	Combination Lock
Lock type	Combination Lock
Manufacturer	Master Lock
Material	Zinc
Model Name	Set Your Own Combination Lock
Model Number	178D
Number of Items	1
Number of Packs	1
Number of Pieces	1, 4, 8
Part Number	FBA_178D
Recommended Uses For Product	Security
Recommended uses for product	Security
Shape	Square
Special Features	Resettable Combination Lock
Special feature	Resettable Combination Lock
Style	Standard
UPC	354123436162
Unit Count	1.0 count

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€ 61.52

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Austria.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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The delivery time was excellent, and the packaging was secure.

2 months ago

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