Milwaukee 21mm 1/2" Drive Socket Metric Deep 45342121
The MILWAUKEE 1/2" Drive 21MM Metric 6-Point Deep Well Socket with FOUR FLAT Sides was designed from the ground up to be part of the most versatile socket family. The 1/2” drive sockets feature an innovative design with four parallel flat sides, which deter rolling and are wrench-compatible. The metric socket sizes are stamped into the flats providing improved, easy-to-read visibility. This deep well socket has been optimized geometry to reduce bolt rounding and stripping. Milwaukee backs their 1/2” Drive Metric Sockets with a lifetime guarantee.
The MILWAUKEE 1/2" Drive 21MM Metric 6-Point Deep Well Socket with FOUR FLAT Sides was designed from the ground up to be part of the most versatile socket family. The 1/2” drive sockets feature an innovative design with four parallel flat sides, which deter rolling and are wrench-compatible. The metric socket sizes are stamped into the flats providing improved, easy-to-read visibility. This deep well socket has been optimized geometry to reduce bolt rounding and stripping. Milwaukee backs their 1/2” Drive Metric Sockets with a lifetime guarantee.
The MILWAUKEE 1/2" Drive 21MM Metric 6-Point Deep Well Socket with FOUR FLAT Sides was designed from the ground up to be part of the most versatile socket family. The 1/2” drive sockets feature an innovative design with four parallel flat sides, which deter rolling and are wrench-compatible. The metric socket sizes are stamped into the flats providing improved, easy-to-read visibility. This deep well socket has been optimized geometry to reduce bolt rounding and stripping. Milwaukee backs their 1/2” Drive Metric Sockets with a lifetime guarantee.
The MILWAUKEE 1/2" Drive 21MM Metric 6-Point Deep Well Socket with FOUR FLAT Sides was designed from the ground up to be part of the most versatile socket family. The 1/2” drive sockets feature an innovative design with four parallel flat sides, which deter rolling and are wrench-compatible. The metric socket sizes are stamped into the flats providing improved, easy-to-read visibility. This deep well socket has been optimized geometry to reduce bolt rounding and stripping. Milwaukee backs their 1/2” Drive Metric Sockets with a lifetime guarantee.
in 6 offers
The lowest price for Milwaukee 21mm 1/2" Drive Socket Metric Deep 45342121 right now is $16.70 at C&L Tool Centre, compared across 6 retailers.
The all-time low was $12.40 on 3 Apr 2024 — today's price is 35% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 11 May 2026.
Last updated at 11/05/2026 08:00:43
Milwaukee 45342121 - 21mm x 1/2" Drive Metric 6 Point Deep Socket - C&L Tool Centre
Delivery between 14–18 May $12
Milwaukee 21mm x 1/2" Drive Metric 6 Point Deep Socket - 45342121
Delivery between 13–19 May $13.22
Milwaukee Drive Socket Metric Deep 21 MM 1/2" Drive - 45342121
Free 30-day returns
Milwaukee 45342121 1/2" Drive 21mm Metric Deep 6-Point Socket
Delivery $9.70
Milwaukee - 21mm 1/2" Drive Socket Metric Deep | 45342121
Delivery between 12–20 May $7.95
Each
Delivery $10
| Socket Size | 21 mm |
| Drive Size | 1/2" |
| Socket Type | Deep |
Milwaukee 45342121 - 21mm x 1/2" Drive Metric 6 Point Deep Socket - C&L Tool Centre
Delivery between 14–18 May $12
Milwaukee 21mm x 1/2" Drive Metric 6 Point Deep Socket - 45342121
Delivery between 13–19 May $13.22
Milwaukee Drive Socket Metric Deep 21 MM 1/2" Drive - 45342121
Free 30-day returns
Milwaukee 45342121 1/2" Drive 21mm Metric Deep 6-Point Socket
Delivery $9.70
Milwaukee - 21mm 1/2" Drive Socket Metric Deep | 45342121
Delivery between 12–20 May $7.95
| Socket Size | 21 mm |
| Drive Size | 1/2" |
| Socket Type | Deep |
