Twin engineers gives handheld pneumatic dispensing guns that are well equipped with in-built quick exhaust facility for drip-free operation. These dispensing guns are ideal for dispensing materials, like the rtv silicone sealant from cartridges and collapsible tubes. The guns function pneumatically by operating the trigger manually, thereby the compressed air, which is fed directly on the cartridge, forces the sealant out of the nozzle. Bead size can be controlled by regulating the pneumatic pressure and suitable nozzle tips. Technical specifications include: cartridge capacity up to 300 cc; collapsible tube capacity 250 ml/50 ml; overall dimensions of the gun at 42 cm [length]; and operating pressure of 4 kg/cm.