Arrow TR400 Glue Gun All-purpose hot melt adhesive system features state electronic heating system. Does not include glue sticks. The TR400 All-Purpose glue gun is ideal for any craft application. Its ergonomic design makes it comfortable to use and large trigger is easy to squeeze. With a double insulated heating element, the TR400 heats up quickly so you can start projects faster. The ergonomic, adult size handle provides the user with maximum control and comfort. A ball check valve prevents glue drip from the nozzle.