Solder or screw type connections. Nickel plated steel, insulated (plastic handle over the barrel on #910 & #910S) or uninsulated, with a 3/8" jaw opening. Jaw is matched and grips securely. For labs, shops, hobbyists. Barrel accepts a standard banana plug. Rated for 5 AMPS. Boot is flexible vinyl that fully insulates clip and allows jaw to open fully. Std.Pkg.: 100.