The backing plate (2) comprises a one-pieced centring region (21) with an annular form and co-operating with the holder (3).

The sleeve or sheath internal conduit (12) has at least one radial clamping stud (22, 24) directed inward and integral with the sleeve or sheath.

A kitchen cabinet is fixed by tenon and mortise joints without clamping element.

The invention concerns a chuck (1) with a shank (4) having an axially located cylindrical opening (41) designed to hold the fixation lug (5) of a tool (6).

In addition, since the lug cutter is fixed to the rib of the lug, the lug cutter may be stably installed on a cut position of the lug to uniformly cut a machined surface of the lug.

The backing plate (2) comprises a one-pieced centring region (21) with an annular form and co-operating with the holder (3).

Preferably, the width of each step is smaller than the distance of said step to the adjacent steps.

The cross-pin (24) is constructed as an eccentric, rendering possible tightening of the elements (10, 11) against one another by means of the straight rod (15).

The at least one pin is slidably contained within the pin bore and is positioned by application of pressure in the pin bore.

A dowel channel is drilled thru a dowel hole of the plate.

A dowel is inserted into the dowel channel, wherein the dowel crosses a joining plane of the first segment and the second segment.

The tang may include a through hole extending from a first tang side to a second tang side and including a through hole center.

The sleeve or sheath internal conduit (12) has at least one radial clamping stud (22, 24) directed inward and integral with the sleeve or sheath.

ratchet wheel driving wheel stud

The height of the upper tenon is greater than the lower tenon.