[CONVENTIONAL CONSTRUCTION] Clean up the joints of the gypsum board, fill the joints with caulking plaster, then pour white latex, use tools to stick the joint tape on the center of the joint. Tape Applicators & Taping Knives Also works for inside corners, edges, and for all types of partitions and walls. [SAVE TIME AND EFFICIENCY] The quick replacement of the inner corner rubber coating wheel can be easily reversed by the flat rubber coating wheel. The ergonomic design of the handle makes you more comfortable and easy to use. [DUAL ADJUSTABLE HANDLE STRAPS] One on each side for right or left-handed use. Has it's practical ergonomic, you can handle it in all directions. avoiding bending your back In addition to ensuring a uniform result, Tape Applicators & Taping Knives has a padded handle, for precise and pleasant work. [NO NEED TO REPLY COMPOUND] Single latch with hinged lid opens easily and quickly for loading tape and mud. A polycarbonate body eliminates dents, dings, and bent