Suitable for piercing the insulation of 14 AWG to 22 AWG wires by rotating the bottom and sliding the black spring clip without damage. Perfect for automotive repair, equipment repair and electrical repair, making it easy to complete voltage measurements. Multimeter test leads are made of high quality copper and PVC which are flexible and durable. Strong conductivity, low resistance and no signal loss. Length: 3.3ft/1m. Leads: III 1000V,10A. Heavy duty alligator clips are made of high quality PA and copper material. Built-in strong spring which has stronger grip and conductivity.The maximum opening can reach 36mm, and there's no deformation after multiple use. Rating: IV 600V, III 1000V 10A. Wire piercing probes are made of high quality plastic which are sturdy, strong, wear resistant and have a long service life. 4mm socket on the bottom is for connection to the multimeter test leads. Colour:Photo Color Material:PVC Package Contents: 2 x multimeter leads 2 x alligator clips 2 x wire piercing probe clips 1 x Chinese and English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.