1/4" hand sockets are commonly used for DIY and bicycle maintenance. Common sockets are 6-point and 12-point sockets and deep sockets. The Metric sizes range from 4mm to 15mm, and the SAE sizes range from 5/32" to 9 /16"; In addition, there are Spline sockets, BIT sockets and the new productions-stubby sockets, which are more convenient for use in small and narrow spaces.