3M Connector Drivers quickly spin on the connector for ease and speed of installation. The 3M Connector Driver WCD-H is a hand driver and the 3M Connector Driver WCD-P is a power driver that fits a standard chuck.These application tools for 3M Connectors O/B+, T/Y+, T/R+, R/Y+, SG-Y, SG-T and SG-R quickly spin on the connector and position the wire bundle in the box. 3M Connector Driver WCD-H is a hand driver that helps provide quick and easy installation of wire connectors. 3M(TM) Connector Driver WCD-P is a power driver that fits a standard chuck and virtually eliminates the need for repetitive hand motion, providing ergonomic benefits.