What are the measurements in inches.

According to Amazon: inside diameter and V groove width = 4mm = 0.1575 inch, outside diameter = 13mm = 0.5119 inch, groove deepnes = 1.5mm = 0.05905 inch. I use them to guide curtain cord.

I haven't seen any rust as of yet. The device I built that uses them is in my garage so doesn't get direct water on it, but it does get pretty humid.

Do these pulleys come with the pins?

Pins? No pins, just the pulleys.

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⚙️ Glide Smoothly, Perform Boldly — Never Miss a Beat in Motion!

BUILT TO LAST - Crafted from high carbon steel for exceptional strength and long-lasting performance under low-speed, low-load conditions.
COMPACT LIGHTWEIGHT - Measuring just 13x13x6mm and weighing 10g, these bearings fit seamlessly into tight spaces without adding bulk.
READY FOR REPLACEMENT - Bulk pack of 20 bearings means you’re always prepared to swap out worn parts and maintain peak performance.
VERSATILE APPLICATION - Ideal for industrial machines, automotive, household appliances, and even agricultural equipment—20pcs to keep you ready.
ENGINEERED FOR PRECISION - Specialized 1.5mm deep V-groove ensures flawless linear motion in 3D printers, drones, and more.

This pack of 20 high carbon steel ball bearings features a precise 1.5mm deep V-groove design (4mm ID x 13mm OD x 6mm thickness) optimized for low-speed, low-load linear motion systems like 3D printers and drones. Engineered for durability and versatility, these bearings are perfect for a wide range of industrial and hobbyist applications, ensuring you stay ahead with reliable, ready-to-install spares.

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Brand	Chiloskit
Material	High Carbon Steel
Item dimensions L x W x H	13 x 13 x 6 Millimeters
Item Weight	10 Grams
Item Thickness	6 Millimetres
Bearing Type	Ball Bearing
Outside Diameter	13 Millimetres
UPC	710185353111
Manufacturer	Preamer
Country of Origin	USA
Item model number	V624ZZ
Product Dimensions	1.3 x 1.3 x 0.6 cm; 10 g
ASIN	B012KKTBRU

20pcs 1.5mm Deep Metal V Groove Guide Pulley Rail Ball Bearings Wheel 4136mm

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