The secret is in the shape.

The scoop-shaped back-probes that take the hassle out of auto-electrical troubleshooting. The Probulator back-probe set includes 1 pair of larger & 1 pair of smaller radius scoop-points for easy entry into nearly all automotive electrical connectors.

• Enter connector housings without damage to connector or cable.
• Establish sure electrical contacts within connectors without "hit & miss."
• Accepts 4mm Ø banana plugs of standard voltmeter & multimeter LT leads.
• Coated brass scoop-points resist corrosion & enhance structural rigidity.
• 2 pairs per set, offered at a popular price for every electrical meter user.
• Attractively packaged to sell itself at retail points of sale.
• Backed by globally respected TecMate after-sales service.