Connecting Leads Red - 300mm,with 4 mm stackable plug at both ends. -EIS-PH1055T offers a thoughtfully designed, durable resource for hands-on learning. Connecting Leads with 4 mm stackable plug at both ends. Connecting Leads with 4 mm stackable plug at both ends. The plugs have nickel plated split hollow pins and are connected by high quality flexible wire. Length 300 mm, Red.