Magnetic Retractable Plumb Bob Quick-Stop Setter Tool

Product Overview:

Achieve rapid, pinpoint vertical alignment on any construction site with our Multi-Functional Magnetic Plumb Bob. Designed for professionals who demand speed and precision, this auto-retracting plumb bob features a 3-way universal mounting system (reinforced pins for wood, ultra-strong 2000 Gauss neodymium magnets for steel, and hooks for concrete/drywall). Equipped with an instant quick-stop heavy bob, automatic balance adjustment, and a high-visibility bright yellow silk line, it maximizes measuring efficiency while reducing setup time.

Key Features:

3-in-1 Versatile Surface Attachment: Mounts instantly on any surface without extra fixtures—use the embedded push-pin for wood framing, built-in ultra-strong magnets for steel beams, or the top hook for concrete walls, nails, and drywall.

Powerful 2000 Gauss Neodymium Magnet: High-grade rare-earth neodymium magnets deliver up to 2000 Gauss of magnetic holding force, enabling a compact, lightweight housing that attaches firmly to ferrous structures without slipping.

Quick-Stop Heavy Plumb Bob: The precision-weighted bob features a rapid stabilization mechanism that dampens oscillations almost immediately, saving valuable jobsite measuring time and improving work safety.

Automatic Balance & Retraction Adjustment: Precision internal spring mechanism allows smooth line extension, automatic rewinding, and steady balance adjustment for exact vertical alignment.

High-Visibility Bright Yellow Silk Line: Durable, stretch-resistant yellow braided silk line provides clear contrast and easy observation even in dimly lit indoor spaces or bright outdoor sunlight.

Products No.	Size	Box/Ctn(pcs)	Gross/Net Weight(kg)	Ctn Size(cm)
BK-114001	3m	6/36	18/17	41x40x28
BK-114002	6m	6/36	22.5/21.5	41.5x39.5x28.8

Wide Applications (Scope of Use):

Steel Structure & Framing: Vertical alignment of steel columns, I-beams, metal framing, and elevators.

Masonry & Bricklaying: Plumb line reference for brick walls, retaining structures, and foundation layout.

Carpentry & Wood Framing: Squaring up timber posts, door jambs, modular housing, and drywall partitions.

Interior Fit-Out & Ceiling Installation: Aligning drop ceilings, ductwork, partition walls, and plumbing risers.

OEM & Customization Capabilities:

Bob Weight Options: 300g, 400g, 600g, 800g, 1000g (or custom specified weights).

Line Length Configurations: 3.0 m (10 ft), 4.5 m (15 ft), 6.0 m (20 ft).

Housing Colors & Branding: Custom ABS housing colors (Pantone matching), pad printing, or laser-engraved brand logo.

Packaging Solutions: Sliding blister card, double blister pack, hanging color box, or retail presentation box.

Why Choose Us?

Industrial Quality Standards: Precision-calibrated line center and bob balance ensure strict vertical plumb accuracy on every job.

Factory Direct Pricing: Direct production line manufacturing ensures scalable capacity, fast lead times, and competitive wholesale pricing.

Comprehensive OEM/ODM Service: Proven track record in supplying custom branded plumb bobs to leading global tool brands and hardware distributors.

100% Quality Inspected: Every batch is tested for magnetic pull force (2000 Gauss), quick-stop damping, line tensile strength, and auto-rewind endurance.

FAQ

Q1: How does the 3-in-1 mounting mechanism work on different surfaces?

A: The tool incorporates three mounting options in one body: retractable steel pins penetrate soft lumber and framing timber; 2000 Gauss neodymium magnets attach securely to steel studs and I-beams; and an integrated top hook/hole hangs directly onto concrete wall nails or bracket screws.

Q2: What is the benefit of the quick-stop plumb bob?

A: Conventional plumb bobs sway for a long time before coming to rest. Our quick-stop bob utilizes a weighted center-of-gravity design that stabilizes the bob almost instantly, drastically cutting down waiting time and speeding up alignment.

Q3: Is the 2000 Gauss magnet strong enough to support heavy bobs?

A: Yes. The rare-earth neodymium magnet generates an intense magnetic field up to 2000 Gauss, easily supporting the tool and plumb bobs up to 1000g on vertical and overhead steel surfaces without sliding.

Q4: What is the MOQ and production turnaround time for OEM custom orders?

A: The standard MOQ for custom branded packaging and housing colors is 1,000–2,000 pcs. The average mass production turnaround is 25–35 days upon artwork and sample confirmation.