The max wide that alligator clips open is 10mm. Voltage: 1000V;Current:15A. Banana Plug: 4 mm. These banana plugs leads are stackable. You can plug more than one banana plug into the same banana socket. Kinda like piggybacking connections. Extremely handy for electrical fault finding, car electronics or for placing upon ones nipples during moments of pain assisted foreplay. The cables have the really nice pliable feel that make you enjoy working.Silicone Banana/Alegator clips smooth and no kinks and easy to coil for storage. These are useful little leads for all sorts of electrical and electronic work. Add this to your meter bag. when you need a third hand, or have to test many circuits sequentially, this is an absolute necessity. nice rubber insulation and the banana plugs mate easily with a regular bench power supply or a regular meter. The clips are strong and banana plugs are firm and fit tight the way banana plugs should. The length of these from clamp tip to banana piggy back is about 40 inches. These silicon cables stay fairly flexible in cold weather NOT like the other plastic coated cables. The spring on the alligator clips is strong enough, and doesnt appear that it will lessen any time soon. Banana Plug to Alligator Clip Test Lead cables are frequently used in school physics laboratories to quickly and cheaply assemble circuits. They are useful for connecting components to wires.