This Faithfull handy SDS Square Drive Adaptor 3 Piece Set will convert your SDS drill into a useful tool for setting and removing nuts, bolts and coach bolts. The adaptors cover three common drive sizes - 1/4in, 3/8in and 1/2in and are an ideal labour saving device when quantities of bolts or nuts are being used, making light work of this type of repetitive task. ATTENTION: These adaptors are recommended for use with 2kg SDS fixing hammers with a hammer stop function.ROTARY USE ONLY: Must not be used on percussion / hammer mode.Set contains the following adaptors:SDS-Plus to 1/4in Square drive.SDS-Plus to 3/8in Square drive.SDS-Plus to 1/2in Square drive.  Additional Information:• Chuck Type: Adaptor