21V Cordless Caulking Machine with Aluminum Tube Battery Powered Electric Sealant Adhesive Machine Hand-held Caulking Machine Kit With Nozzle 2.0 Ah Battery and Charger Features: Intelligent Machine Return Limit Sensor: New limit switch at the end of the machine, intelligent gun return limit anti-jam design. Configuration of Cruise Mode: Double-click the glue button can be automatically switched to the cruise mode, you can automatically out of the glue. 6-Speed Control: Gear shifting does not get stuck, thrust is uniform, and one-touch speed control to control the speed as needed. Alloy Gear: Tooth carburizing quenching process is better than normal high temperature quenching process. LED Time-Delay Lighting: Delayed and high brightness LED light supplement, not enough light can also successfully complete the work. Wide Application: This caulking machine is widely used in construction and houses. Installing door frames, window, siding, roofing, furnishing bathrooms and kitchens caulking gaps. Specifications: Plug: EU / US / UK (Optional) Battery Quantity: 1Pcs / 2Pcs (Optional) Material: ABS+ Aluminum Alloy Maximum Stroke: 315mm Maximum Thrust: 800±50KG Dispensing Speed: 6 speeds adjustable Operating Temperature: 5℃-50℃ Cruise Control: Yes Glueing Speed: 53s at a time Battery Voltage: 21V Battery Model: 68VF Battery Series Capacity: 10Ah (5 * 2000mAh, series connection) Battery Parallel Capacity: 2.0Ah Item Size: 600 * 270 * 90mm / 23.62 * 10.63 * 3.54in Item Weight: 1976g / 4.35lb Package Weight: 4246g / 9.36lb Package Size: 55 * 30 * 12cm / 21.65 * 11.81 * 4.72in Package List: 1 * Caulking Machine 1 * Tube 1/2 * Battery 1 * Charger 1 * Nozzle 1 * Storage Box 2 * Soft/Hard Rubber Piston 1 * Elbow Base 2 * Soft Rubber Base 2 * Hard Rubber Base 7 * 7/8/9/10/12/13/15mm Stainless Steel Nozzle 7 * 16/18/20/23/25/28/30mm Stainless Steel Nozzle 1 * User Manual (English)