Snap-on TWM21 21mm Metric Shallow 6 Point Socket

Snap-on TWM21 is a 1/2 in drive, 21 mm metric shallow 6-point socket designed for tightening or removing 21 mm hex fasteners in tight spaces. The 6-point geometry provides a secure grip on hex heads and helps prevent rounding when used with a standard 1/2" Snap-on ratchet or torque wrench. With its shallow profile, this socket fits where deeper tools won't, making it well-suited for cramped engine bays, suspension work, and other low-clearance applications. The part number TWM21 identifies the 21 mm size within Snap-on's 1/2" drive metric socket lineup, enabling straightforward matching with other sizes in the same family. Compatible with 1/2" drive tools, the socket is intended for automotive and mechanical tasks that require precise engagement of a 21 mm fastener without excessive reach.