Features 1、Good Conductivity: The back probe kit has excellent conductivity, which can assist instruments and equipment to read quickly and accurately. 2、Strong Practicability: A full set of special test accessories to meet various test requirements. 3、Excellent Material: Banana plug test leads kit is made of PVC, copper, PA, durable and not easy to damage. 4、Size Parameters: The plug size of the rear probe test kit is 4mm and the jack size is 4mm, which is highly practical. 5、Wide Application: Professional electronic test kits can be used in physical laboratories, service shops, schools, homes and industry. Specification Item Type: Banana Plug Test Leads Kit Material: PVC, Copper, PA Plug Size:Approx. 4mm / 0.16in Jack Size:Approx. 4mm / 0.16in Package List 5 x Test Clip Connecting Wire (Red, Black, Yellow, Blue,Green) 5 x Puncture Probe with Shell (Red, Black, Yellow, Blue,Green) 5 x 4mm Test Clips(Red, Black, Yellow, Blue,Green) 5 x Long Puncture Probe(Red, Black, Yellow, Blue,Green) 2 x 4mm Banana Plug Connectors (Red,Black) 2 x Short Puncture Probe (Red,Black) 1 x Plastic Box