Is the metal plated for corrosion resistance? What kind of plating?

It definately has some sort of corrosion protection. Not quite sure if it's a light zinc or what hut thry are not corroding at my house and I live on the water.

will these casters fit the origami 6 tier bookshelf?

I’m not familiar with the origami 6 tier book shelf. Are there holes in the bottom to accommodate the threaded studs? They are very nice wheels!

Can the 1 1/2 inch screw be replaced by a longer screw?

The 1 1/2'' screw is a stud that is form to the bracket of the caster.. Hope this helps.

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HOLKIE Stem Casters Wheels Set of 4 Standard US 3/8"-16 x 1-1/2" with Brake

HOLKIE Stem Casters Wheels Set of 4 Standard US 3/8"-16 x 1-1/2" with Brake

Product ID: 360823534

Details

Brand
HOLKIE
Color
Grey
Item Weight
1.3 kg
Material
Thermoplastic
Unit Count
4 Count

🔄360° swivel mobility

⚙️600 lbs max load

🛠️Standard 3/8"-16 x 1.5" universal fit

¥10300

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛒 Upgrade your workspace mobility—because smooth moves mean smooth success!

HEAVY DUTY STRENGTH - Supports up to 600 lbs with robust steel construction—built to last through your busiest projects.
SECURE BRAKING SYSTEM - Reliable brakes lock wheels firmly in place, giving you stability when and where you need it most.
SMOOTH SILENT GLIDE - Premium TPR wheels ensure whisper-quiet movement without scratching hardwood, tile, or carpet floors.
QUICK HASSLE FREE SETUP - Includes upgraded wrench and all components for a fast 5-minute installation—get rolling in no time.
EFFORTLESS MANEUVERABILITY - 360° swivel design lets you navigate tight spaces with ease—turn any stationary setup into a mobile powerhouse.

The HOLKIE Stem Casters Set of 4 features a universal 3/8"-16 x 1-1/2" threaded stem, premium non-marking TPR wheels, and heavy-duty steel construction supporting up to 600 lbs. Designed for quiet, floor-safe operation on multiple surfaces, these casters offer 360° swivel mobility and secure brakes for versatile, easy maneuvering. Perfect for wire shelving, workbenches, and utility carts, with a quick 5-minute setup including an upgraded wrench.

Specifications

ASIN	B09GFDSRMD
Best Sellers Rank	#1,394 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3 in Stem Casters
Brand Name	HOLKIE
Caster Type	Stem
Color	Grey
Customer Reviews	4.7 4.7 out of 5 stars (2,507)
Included Components	Stem casters and wrenches
Item Weight	1.3 kg
Load Capacity	600 lbs
Manufacturer	HOLKIE
Material Type	Thermoplastic Rubber
Model	SGJL3G38
Mounting Type	Stem Mount
Part Number	SGJL3G38
Surface Recommendation	Multi-Surface
UPC	795276999652
Unit Count	4 Count
Wheel Width	2 inches

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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¥10300

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

View all Trustpilot reviews