Device comprising a blade and a blade coupler for coupling the blade to a rotatable shaft, the blade coupler comprising: a blade channel configured to at least partially enclose four sides of the blade responsive to insertion of the blade therein; characterized in that the blade coupler further comprising: a support base ; and a sleeve that is movable relative to the support base based on a compression state of a biasing element , wherein the blade is insertable into the blade channel by orienting the blade to apply a force to sidewalls of the sleeve to shift the biasing element to a compressed state and rotating the blade proximate to the support base to enable the biasing element to shift to an extended state in which sidewalls of the sleeve define lateral longitundinal sides of the blade channel , wherein the support base forms a top portion of the blade channel and includes tongues disposed on opposite sides of the blade channel , forming a bottom portion of the blade channel , wherein the tongues extend around sides of the blade and over a portion of the bottom face of the blade when the blade is installed and wherein the blade is locked in the blade channel by the sidewalls of the sleeve being released to the extended state to hold the sides of the blade in place in combination with the tongues , when the blade is installed. a blade channel configured to at least partially enclose four sides of the blade responsive to insertion of the blade therein; characterized in that the blade coupler further comprising: a support base ; and a sleeve that is movable relative to the support base based on a compression state of a biasing element , wherein the blade is insertable into the blade channel by orienting the blade to apply a force to sidewalls of the sleeve to shift the biasing element to a compressed state and rotating the blade proximate to the support base to enable the biasing element to shift to an extended state in which sidewalls of the sleeve define lateral longitundinal sides of the blade channel , wherein the support base forms a top portion of the blade channel and includes tongues disposed on opposite sides of the blade channel , forming a bottom portion of the blade channel , wherein the tongues extend around sides of the blade and over a portion of the bottom face of the blade when the blade is installed and wherein the blade is locked in the blade channel by the sidewalls of the sleeve being released to the extended state to hold the sides of the blade in place in combination with the tongues , when the blade is installed. a support base ; and a sleeve that is movable relative to the support base based on a compression state of a biasing element , wherein the blade is insertable into the blade channel by orienting the blade to apply a force to sidewalls of the sleeve to shift the biasing element to a compressed state and rotating the blade proximate to the support base to enable the biasing element to shift to an extended state in which sidewalls of the sleeve define lateral longitundinal sides of the blade channel , wherein the support base forms a top portion of the blade channel and includes tongues disposed on opposite sides of the blade channel , forming a bottom portion of the blade channel , wherein the tongues extend around sides of the blade and over a portion of the bottom face of the blade when the blade is installed and wherein the blade is locked in the blade channel by the sidewalls of the sleeve being released to the extended state to hold the sides of the blade in place in combination with the tongues , when the blade is installed. <EOS>