7100276426 is a test clip or probe accessory from 3M designed for in-circuit IC testing, prototype and production testing, quality control inspection, and field service applications. The product line features phosphor bronze contacts housed in nylon bodies, with probe clips available in four different sizes: 1.63", 2.19", 2.38", and 3.56". The design includes a retractable contact hook mechanism that reduces shorts by keeping the hook sheathed in the nylon body until manually pressed. These test accessories are commonly used in the electronics industry for safe access to IC leads during testing without risk of shorting out valuable chips.