An impact hand tool which includes an outer sleeve; an impact rod inserted to connect to the outer sleeve; a cushion pad provided inside the outer sleeve at the vertical center axis; a handle connected to the impact rod; an inner hole slot at a second end of the outer sleeve with an inner wall and an internal thread; and a tool head installed to the outer sleeve through the inner hole slot. The tool head comprises a one-piece structure of a working rod portion and a working head, a connecting rod having an external thread for coupling with the inner hole slot, a connecting sleeve connected to the connecting rod to form an integral and stepped hollow body defining a connecting cavity to receive the working rod portion, and a rubber filler to fill a gap between the working rod portion and the inner wall of the connecting rod.

A concrete form removal assembly for removing a sleeve from a concrete slab includes a sleeve. The sleeve is embedded in a concrete slab for defining an opening extending through the concrete slab when the concrete slab is poured. A cutting unit is provided that has a cutting end and a striking end. The cutting end is positioned on the sleeve and the striking end is struck with a driving tool. Thus, the cutting end is urged to cut through the sleeve for removing the sleeve from the concrete slab.

A concrete form removal assembly for removing a sleeve from a concrete slab includes a sleeve. The sleeve is embedded in a concrete slab for defining an opening extending through the concrete slab when the concrete slab is poured. A cutting unit is provided that has a cutting end and a striking end. The cutting end is positioned on the sleeve and the striking end is struck with a driving tool. Thus, the cutting end is urged to cut through the sleeve for removing the sleeve from the concrete slab.

A gasket includes a body, a through hole, a covering portion, at least one groove, a protruding ring and an extending portion. The body includes a cutter surface facing towards the cutter and a holder surface opposite to the cutter surface. The through hole penetrates the body, and the through hole has an axial direction. The covering portion surrounds the body and protrudes outwards from the holder surface along the axial direction, and the covering portion has a covering thickness relative to the holder surface. The at least one groove is disposed at the holder surface and located between the covering portion and the through hole. The protruding ring protrudes from the holder surface and located between the covering portion and the at least one groove. The extending portion is located at the holder surface, protrudes from the holder surface, and surrounds the through hole.

A gasket includes a body, a through hole, a covering portion, at least one groove, a protruding ring and an extending portion. The body includes a cutter surface facing towards the cutter and a holder surface opposite to the cutter surface. The through hole penetrates the body, and the through hole has an axial direction. The covering portion surrounds the body and protrudes outwards from the holder surface along the axial direction, and the covering portion has a covering thickness relative to the holder surface. The at least one groove is disposed at the holder surface and located between the covering portion and the through hole. The protruding ring protrudes from the holder surface and located between the covering portion and the at least one groove. The extending portion is located at the holder surface, protrudes from the holder surface, and surrounds the through hole.

A mortising kit for hinges, locks, strike plates, and the like can include a guide attachable to a subject to be mortised (e.g., door or door jamb). The kit can include a chisel that interacts with locating features of the guide to ensure proper placement of the chisel. Force applied to the chisel can score or otherwise cut the subject to a desired depth, at which point stops or other features of the guide can limit the chisel from scoring or cutting deeper. Placement of the chisel at opposite ends of the guide allow the full mortise perimeter to be scored or cut. Excess waste material can be removed from between the mortise perimeter, such as through use of the block plane.

A mortising kit for hinges, locks, strike plates, and the like can include a guide attachable to a subject to be mortised (e.g., door or door jamb). The kit can include a chisel that interacts with locating features of the guide to ensure proper placement of the chisel. Force applied to the chisel can score or otherwise cut the subject to a desired depth, at which point stops or other features of the guide can limit the chisel from scoring or cutting deeper. Placement of the chisel at opposite ends of the guide allow the full mortise perimeter to be scored or cut. Excess waste material can be removed from between the mortise perimeter, such as through use of the block plane.

A flat chisel (1) having a longitudinal axis (7), a shank (2) and a blade-shaped working section (5). The shank (2) has a striking surface (4) perpendicular to the longitudinal axis (7). The working section (5) has a cutting edge (3) that is crosswise to the longitudinal axis (7). The cutting edge (3) is configured so as to be saddle-shaped.

A mortising kit for hinges, locks, strike plates, and the like can include a guide attachable to a subject to be mortised (e.g., door or door jamb). The kit can include a chisel that interacts with locating features of the guide to ensure proper placement of the chisel. Force applied to the chisel can score or otherwise cut the subject to a desired depth, at which point stops or other features of the guide can limit the chisel from scoring or cutting deeper. Placement of the chisel at opposite ends of the guide allow the full mortise perimeter to be scored or cut. Excess waste material can be removed from between the mortise perimeter, such as through use of the block plane.

A mortising kit for hinges, locks, strike plates, and the like can include a guide attachable to a subject to be mortised (e.g., door or door jamb). The kit can include a chisel that interacts with locating features of the guide to ensure proper placement of the chisel. Force applied to the chisel can score or otherwise cut the subject to a desired depth, at which point stops or other features of the guide can limit the chisel from scoring or cutting deeper. Placement of the chisel at opposite ends of the guide allow the full mortise perimeter to be scored or cut. Excess waste material can be removed from between the mortise perimeter, such as through use of the block plane.