The B5-5 is designed for rotary work in general dental surgery, where a contra angle brings the bur to surfaces that lie out of line with a straight piece. The ratio is a 1:5 speed increase, so the bur turns faster than the drive that feeds the head.
In restorative rooms and hospital clinics, a contra angle is picked up and set down many times in one day. The C-shaped groove outlet delivers a stable, concentrated spray at the cut while the bur turns. Four sanitary holes at the front end keep dirt out of the head, and a dust-proof cover on the movement keeps debris out as well. The magenta ring at the base gives a team a quick cue on a tray of plain metal, and the SCHB5 marking on the body can be read beside the code.
The technical lines are short. A push-button chuck holds a 1.6 mm bur, and the spray reaches the cut at four points. The top rotation speed is 200,000 rpm, and a four-fold gear structure drives the head. Noise level, air supply, weight, and head size are not part of the description, and a team that needs one can request it through Medigear before buying.
Practice managers and dental assistants handle purchasing. One code, B5-5, names the handpiece. A reorder for any room is a single line under that code, which keeps the trays matched from room to room.