Will these work with 5/16 cable?

The width of wheel is 3/8 with 1/16 wide peak on each side of half round concave U curve for the 1/4 inch cable to ride freely on, 5/16 cable looks like it would still work, will be a tight squeeze and would be the maximum size cable this roller is made for.

Are the ball bearings stainless steel?

They have lasted me years in the weather. Everything you can see on them is stainless. As for the bearings inside, I don’t know, never had one go bad and my oldest ones are at least 3 years old and exposed to all the weather. They are hardiest I have ever used.

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⚡ Elevate your zip line game with seamless glide and rock-solid reliability!

RISK FREE CONFIDENCE - Backed by a 1-year limited warranty and 30-day full refund guarantee—because your thrill ride deserves the best.
UNIVERSAL COMPATIBILITY - Specifically tailored for CTSC Zip Line Trolleys but versatile enough for multiple pulley applications.
EFFORTLESS SWAP UPGRADE - Quick and easy installation means minimal downtime and maximum adventure time.
OPTIMIZED DEEP U GROOVE DESIGN - 5mm V groove depth reduces friction for ultra-smooth zip line pulley action.
PRECISION ENGINEERED FOR PERFORMANCE - High-quality stainless steel ensures long-lasting strength and corrosion resistance.

This pack of 2 CTSC Zip Line Replacement Bearings features high-grade stainless steel construction with a 7mm inner diameter, 30mm outer diameter, and 9mm thickness. The deep 5mm U groove minimizes friction for smooth pulley operation, ensuring durability and easy installation. Perfect for upgrading or replacing your zip line trolley bearings, these bearings come with a 1-year warranty and 30-day satisfaction guarantee.

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Brand	CTSC
Material	Stainless Steel
Item dimensions L x W x H	30 x 30 x 9 Millimeters
Bearing Number	2
Item Thickness	9 Millimetres
Bearing Type	Ball Bearing
Compatible Lubricant	Grease
Outside Diameter	30 Millimetres
UPC	192389778912
Manufacturer	CTSC
Model number	FA20-01
Number of Memory Sticks	1
Item Weight	222 g
Product Dimensions	3 x 3 x 0.89 cm; 222 g
Item model number	FA20-01
Item Height	0.35 Inches
Item Width	1.18 Inches
Are batteries included?	No

Zip Line Replacement Stainless Steel Deep U Groove Ball Bearings Pack of 2

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