<p>A mixing tool includes: an elongate shaft having a longitudinal axis; and a mixing blade located at an end of the shaft, the mixing blade having a bottom, a top, two sides, and a mixing blade face disposed therebetween. Two flow ports each including an opening is disposed in the mixing blade face for flow therethrough of material being mixed by the mixing blade. Each flow port further includes a flow deflector for deflecting material flow through the opening toward the axis of the shaft. The deflected flows are convergent. The flow port is located closer to the bottom than to the top of the mixing blade. An end cap includes a gripping surface located in a radial direction further from the longitudinal axis than a gripping surface of the shaft. The center of gravity of the mixing blade lies approximately along the longitudinal axis of the shaft.</p>
