EFIELD 1-in Black J-Clamp J-Hook Nail Pack of 500 - PEX Support

In this review of the EFIELD 1-in Black J-Clamp J-Hook Nail pack of 500, the bottom line is simple: this is a practical bulk solution for pros and DIYers who need reliable, easy-to-install support for 1 in PEX tubing. The reviewer found the clamps are made from durable engineering plastics and come with pre-installed nails, which speeds up installs under floors and in tight cavities. For anyone running long PEX runs or stocking a job truck, the pack delivers value and consistent performance without unnecessary frills.

Key Features

• Bulk supply: 500 clamps in one pack eliminate frequent reordering and keep a steady inventory for larger projects.
• Material durability: Made of engineering plastics that resist everyday wear and handle typical plumbing environments.
• Half clamp design: The open half clamp makes it easy to position and remove the pipe during layout and adjustments.
• Pre-installed nail: Each clamp includes a nail which speeds installation and ensures consistent fastening into wood or framing.
• PEX compatibility: Sized for 1 in PEX tubing so fittings and runs sit securely without crushing or excessive play.

Who It's For

The EFIELD pack is aimed at plumbers, HVAC technicians, builders, and experienced DIYers who run multiple lengths of PEX and need a cost-effective, ready-to-use fastener in large quantities. It suits jobs like underside of subfloors, wall cavities, and mechanical rooms where many supports are required.

Those who should look elsewhere include installers who primarily work with 1/2 in PEX or need a heavy-duty metal clamp for extreme structural loads; a few users noted fit differences with smaller tubing sizes and some applications may need a different clamp profile.

Pros & Cons

Pros

• Good value for bulk projects because 500 pieces cover long runs without frequent restocking.
• Simple snap-on half clamp design that makes alignment and removal straightforward during layout.
• Sturdy pre-installed nails hold well in framing, reducing installation steps and time.
• Material quality feels solid for plastic clamps and works well in typical plumbing scenarios.

Cons

• Not all users found them ideal for smaller sizes of tubing; fit can be loose on some 3/4 in or 1/2 in installations depending on pipe jacket.
• Plastic construction is less robust than metal for very heavy-duty or exposed exterior fastening.

Specifications

Product	J-Clamp J-Hook with Nail
Quantity	500 PCS
Color	Black
Compatible tubing	1 in PEX tubing
Material	Engineering plastics with pre-installed nail
Design	Half clamp for easy positioning and removal

Our Verdict

The EFIELD 500-pack of 1 in J-clamps is a practical, economical pick for professionals and serious DIYers who need many reliable PEX supports. It combines durable plastic construction, a snap-on half clamp, and pre-installed nails to speed installs and reduce trips to the supplier, making it good value for mass installations where plastic clamps meet the job requirements.

Frequently Asked Questions

Do these clamps fit 3/4 in or 1/2 in PEX?
They are sized for 1 in PEX; some customers reported they fit 3/4 in in certain cases, but they may be loose on 1/2 in pipe.

Are the nails pre-installed?
Yes, the clamps come with nails inserted to speed up installation and provide consistent fastening.

Are these suitable for outdoor exposed use?
They are made of durable engineering plastics but are primarily intended for indoor plumbing and concealed cavity use rather than long-term exposed exterior environments.