1、4 Variable Speeds: This battery caulk gun features 4 variable speeds that allow you to control the flow or speed of movement and is powerful enough to handle most adhesives and caulks. It has a variable pressurization speed of 0‑12.5mm/s 2、Built In LED Light: This battery operated caulk gun has a built in LED light that illuminates when working in attics, crawlspaces, garages, or other dark spaces, bright enough for you to notice the flow of caulk and the seams. 3、Automatic Retraction System: This cordless caulking gun has an automatic retraction system that prevents the plug from continuing to leak when stopped. When the trigger is released, the motor instantly reverses, releasing the pressure on the tube. 4、Easy To Use: This adhesive caulk gun is very easy to use, during the glue stick push, press the locking button, keep both hands smoothly push the glue gun, you can quickly hit the smooth glue. Using 4 speeds, you can finish a glue in about 2 minutes, which greatly improves the working efficiency. 5、Wide Application: This adjustable speed electric caulk gun has a wide range of applications for home renovation, kitchen stove tops, shower fixtures installation, floor refinishing and seamstressing. Item Type: Cordless Caulking Gun Material: ABS, Pure Copper Speed: 0-12.5mm/s Thrust: 6500N Stroke: Approx. 205mm / 8.07in Suitable Material: 300ml Hard Glue Battery: Lithium Battery Pack x 1 (4AH) (Included) 1 x Cordless Caulking Gun 1 x Battery 1 x Charger