The Most Efficient 3-in-1 Heavy-Duty Staple Gun Kit comes with an all-steel Manual Staple Gun and 2000pcs staples of 3 different sizes which is ideal for outdoor and indoor repair, decoration and fastening.For DIY home improvement and maintenance projects, the right tools save valuable time and costs.3 in 1 Heavy Duty Manual Staple GunAll-Steel construction and chrome finish for durability and rust-proof.Rubberized non-slip grip minimizes hand fatigue and ensures a secure grip.The handle lock mechanism provides comfort and safe storage.Quick-review window easily notice when staple supply is getting low.Shock absorbers and high hardness impact block can reduce internal shock to prolong service life.Quick-jam clear mechanism and bottom load design for quick and easy loading.Adjustable pressure setting to make sure you get the right pressure for the task at hand.NOTE: Pls take out all staples before locking, then press the handle to the bottom for locking.Step 1Remove the loading lever.Step 2Hold both side of magazine at opening tip and pull it backward, the open the magazine outward.Step 3Check the drive channel, look for the jammed staples and remove them.Step 4After finishing and then restore the all-steel drive channel to achieve quick jam clearing.