Extension handle for tree top pruners

An extension handle for a tree pruner comprising a tubular connecting socket, an inner sleeve, a handle tube, a shear holder tube and a constraining ring, wherein:

• said connecting socket comprises a top flange;
• and the inside of the top flange of the connecting socket has a bevelled face;
• said inner sleeve is movably retained inside said connecting socket by springs, and comprises a plurality of raised portions equidistantly spaced on an inner wall thereof adjacent to a bottom end thereof, an inward flange on the inner wall above the raised portions, and a plurality of steel balls received in respective recessed holes on the inner wall adjacent to a top end thereof;
• said handle tube comprises a plurality of recessed holes equidistantly spaced around an outer wall adjacent to a top end thereof inserted into said inner sleeve from a bottom end of the inner sleeve with the raised portions on said inner sleeve respectively engaged into the recessed holes thereof;
• said shear holder tube comprises a plurality of recessed holes around an outer wall adjacent to a bottom end thereof inserted into said inner sleeve from a top end of the inner sleeve with said steel balls respectively engaged into the recessed holes thereof, a tightening up means adjacent to a top end thereof for fastening a tree pruner;
• and
• said constraining ring is mounted on the top flange of said connecting socket to constrain said steel balls inside the respective recessed holes on said inner sleeve.