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CAT III 1000V insulated alligator test clip pair, red positive and black negative color coded, serrated metal jaw, safety CE marking printed on plastic housing, isolated white background

Dual red and black CAT III alligator test clips rear view, 4mm banana jack female socket at the end of each handle, embossed safety voltage marking, insulated plastic housing, white background

Red and black insulated alligator clips pre-attached to flexible test lead wires, detachable banana jack connection joint visible, CAT III safety marking on clip housing, white isolated background

Human hand squeezing red CAT III alligator test clip trigger, fully open serrated metal jaw displayed to show internal gripping structure, insulated red plastic housing, white background

Features & Details

🐊 30MM JAW OPENING	Large dolphin-mouth jaw profile opens up to 30mm (1.18″), clamping thick car battery terminals, grounding lugs, and busbars firmly.
🔌 4MM BANANA SOCKET	Rear socket connects to all standard 4mm shrouded and un-shrouded banana plug test cables from oscilloscopes and multimeters.
🛡️ CAT III 1000V INSULATION	Full-coverage flexible silicone/PVC insulation sheath protects hands from high-voltage transient spikes up to 1000V (CAT III).
⚡ NICKEL-PLATED BRASS	Nickel-plated solid brass contact teeth provide low contact resistance (<0.01Ω) and high oxidation resistance under grease and oil.

About this item

Product specification

Attribute

Hantek HT18A Technical Details

Physical Dimensions & Interfaces

Overall Length

85 mm (3.35 inches)

Overall Height

37.5 mm (1.48 inches)

Max Clamping Limit

Up to 30 mm (1.18 inches) Jaw Opening

Connection Interface

Universal Φ 4mm banana plug socket integrated into the handle.

Safety, Materials & Compatibility

Insulation Material

Fully insulated with a double-layer PVC protective sheath.

Metal Components

✓ Gold-plated brass sockets (<0.5Ω low resistance)
✓ Laser-cut serrated jaws for secure grip

Package Contents

1 Pair (1 x Red Clip + 1 x Black Clip)

Device Compatibility

Plug-and-play compatibility with Digital Multimeters, Oscilloscopes (via HT30A test cables), and Voltage Testers.

Automotive Diagnostics & Heavy Electrical Clamping

Hantek HT18A Large Dolphin Alligator Clips (Red & Black Pair)

Small hobbyist crocodile clips slip off vehicle battery posts and structural chassis grounds, causing dangerous open-circuit voltage spikes. The genuine Hantek HT18A heavy-duty dolphin alligator clip pair features deep serrated nickel-plated jaws with a wide 30mm opening. Designed for automotive scope wave testing, secondary ignition analysis, and industrial bench multimeters, they ensure rock-solid connection. Explore our complete selections in the Accessories catalog.

High-Tension Steel Spring

Reinforced internal spring steel hinge maintains tight biting force on vehicle chassis grounding bolts even under engine vibrations, preventing signal loss during dynamometer road trials.

Universal 4mm Socket Fit

The recessed rear receptacle accepts safety-sheathed 4mm banana plugs from Hantek, UNI-T, Fluke, and standard benchtop power supply leads directly without adapters.

Electrical Rating Notice

Rated for CAT III 1000V / CAT IV 600V with a maximum current capacity of 10A. Package contains 1× Red clip and 1× Black clip.

Related testing & equipment:
Oscilloscope Instrument |
Digital Multimeter

HT18A alligator clips with double-layer PVC insulation and polarity coding

HT18A alligator clips safely gripping wires during circuit testing

Use Cases

Auto Diagnostics & Repair Safety & Protection

FAQs

Q1: Will these clips fit onto standard multimeter probes?

A: Yes, they absolutely will. Specifically, the back of the handle features a universal 4mm socket. Therefore, you can slide your standard multimeter banana plugs directly into them securely. Consequently, you instantly upgrade your basic probes into hands-free clamping tools.

Q2: Will the serrated jaws damage my delicate automotive wires?

A: No, they will not damage your wires. Although the jaws are laser-cut for a tight grip, the spring mechanism is perfectly balanced. Specifically, it applies a steady 5lbs of clamping force. Thus, it holds firmly onto 24AWG micro cables without crushing the internal copper strands.

Q3: Why are the clips colored red and black?

A: This is a crucial professional safety standard. First, the red clip always indicates the positive (+) connection. Next, the black clip indicates the negative (-) ground connection. Therefore, this high-visibility color coding prevents disastrous reverse polarity mistakes completely during live circuit testing.

Q4: Can the jaw open wide enough to clamp onto a car battery post?

A: Yes, it is explicitly designed for heavy-duty tasks. The jaw mechanism opens to a massive 30mm (1.18 inches) wide. As a result, it easily clamps over thick automotive battery terminals, alternators, and thick industrial grounding cables securely.

Hantek HT18A Alligator Clips (Red & Black), Large Dolphin Test Leads with Universal 4mm Banana Plug Socket

Name: HT18A Alligator Clips | Hantek 4mm Banana Plug Test Leads
Brand: Hantek
SKU: HT18A
Price: 6.66 USD
Availability: InStock

Original price was: $9.99.Current price is: $6.66.

Extra 5% Off with code: welcome5

6–12 Month Warranty

Repair & Refund support available for most products.

Free Worldwide Shipping

Ships within 3 business days.

Taxes & Duties

Buyer responsible for local import fees.

24/7 After-Sales Support

Technical assistance & video guidance within 24h.