Are these compatible with the hobie kayak h-rail systems?

I would have to say no.Could not hold the weight.

Size can it be used on a 5/8 bar

The 16mm insert should work with a 5/8-inch (0.625-inch) bar.

Will this fit on a rear bicycle rack?

No, the diameter of the inside is too big for a bicycle rack.

can this be uesd with a square roof rack bar ?

If it’s within the 2” max diameter

Stdysun 3e 2pcs 0 75 1 1 25 Horizontal Bull

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Description

🚗 Light up your ride with precision and style—mount like a pro, shine like a boss!

RUGGED DURABILITY - Crafted from lightweight, anti-oxidation aluminum alloy to withstand harsh conditions and daily wear.
PRECISION ANGLE CONTROL - Multiple angle adjustments let you customize your lighting setup for maximum visibility and style.
READY FOR ANY ADVENTURE - Compatible with LED, HID, halogen spotlights, fog lights, and driving lights—perfect for cars, motorcycles, trucks, and more.
EFFORTLESS UNIVERSAL FIT - Clamp-on design fits 0.75", 1", and 1.25" bars—no drilling required, preserving your vehicle’s integrity.
VIBRATION DAMPENING PROTECTION - Rubber inserts absorb shocks and prevent scratches, keeping your bull bar and lights pristine.

The STDYSUN 3E Bull Bar Mounting Bracket set offers a universal, no-drill solution for securely attaching fog, driving, or LED lights to horizontal bars ranging from 0.75" to 1.25" in diameter. Made from durable aluminum alloy with vibration-dampening rubber inserts, these brackets ensure a stable, scratch-free installation on cars, motorcycles, trucks, and off-road vehicles. Easy to install and adjustable for optimal light positioning, this set includes all necessary hardware and is backed by responsive customer support.

Specifications

ASIN	B0824JR9PX
Batteries are Included	No
Best Sellers Rank	#13,472 in Automotive ( See Top 100 in Automotive ) #8 in Car Headlight Brackets
Brand Name	STDYSUN
Color	Black -
Colour	Black -
Customer Reviews	4.5 out of 5 stars 1,533 Reviews
Finish Types	Painted" or "Powder Coated
Finish type	Painted" or "Powder Coated
Item Weight	0.25 Kilograms
Light Output Maximum	100 Lumens
Light Source Type	Halogen, Light Emitting Diode
Light source type	Halogen , Light Emitting Diode
Manufacturer	STDYSUN
Manufacturer Part Number	STDYSUN-Maker
Material	Aluminum
Material Type	Aluminum
Model Number	ST-ZJ
Mounting Type	Handlebar Mount
Number of Light Sources	2
Power Source	Works with DC adapter
Set Name	Pair
Shade Material	Aluminum
Shade material	Aluminum
Shape	Round
Smart Home Compatibility	Not Smart Home Compatible
Style Name	Modern and Minimalist
UPC	789099072517
Unit Count	2 Count
Voltage	12 Volts

Reviews

A**I

Good Fit, looks good

15.02.2025

C**M

Resistente

Producto de buena calidad muy útil

20.01.2024

I**C

Cheap and effective

Got these to mount some offroad lights to the crash bars on my motorcycle. The variety of rubber inserts provided made it fairly easy to get a solid grip on the bars, and it's more than enough to hold the lights in place unless I really try to move the lights. For the price, I'm extremely happy with them

18.12.2024

�**�

ممتازه

الجودة طيبه وتأدي الغرض منها

23.06.2025

D**E

Great quality.

Used these on 7/8” to mount a windshield. Quality was amazing. Very nice finish and the rubber mount is excellent.

17.04.2026

P**J

GOOD PRODUCT

Item advertised was delivered on time and appeared to be in acceptable condition

14.12.2025

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HK$153

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

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