Top 7 21mm Deep Socket UK – Sockets & Socket Sets

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1. Sealey

Sealey S1221D Deep Walldrive Socket, 1/2" Square Drive, 21mm, Silver

Sealey - Drive: 1/2"Sq. Size: 21mm. Height: 138mm. Walldrive socket configuration. Chrome plated in half chrome, half satin finish with knurled ring for extra grip with oily fingers.
Height13.8 cm (5.43 Inches)
Length2.7 cm (1.06 Inches)
Weight0.1 kg (0.22 Pounds)
Width3 cm (1.18 Inches)
Part NumberS1221D

2. Teng

Teng M380621c Deep Socket 21mm 3/8 Square Drive

Teng - Lightweight construction at just 017 kgs. High performace for the home or tradesman. Proven reliable Teng Tools technology.
Height11.51 cm (4.53 Inches)
Length2.79 cm (1.1 Inches)
Weight0.08 kg (0.17 Pounds)
Width4.5 cm (1.77 Inches)
Part NumberM380621-C


US PRO USP1389 14pc 3/8' Drive Deep Sockets CRV 6 Point Metric 8mm-21mm

US PRO - Item package Quantity: 1. Knurling ring on bottom of sockets. Made from chrome Vanadium Steel for strength and durability. 8mm, 11mm, 17mm, 9mm, 10mm, 15mm, 12mm, 14mm, 19mm, 13mm, 16mm, 18mm, 20mm & 21mm.
ManufacturerUS PRO
Part NumberUSP1389

4. Teng

Teng M120621c Deep Bi-Hexagon Socket 21mm 1/2in Square Drive

Teng - Have a satin finish. Manufactured from chrome vanadium steel. Produced in accordance with ISO900 and AS954. Bi-hexagon 1/2in square drive deep socket. For increased torque and reduced risk of rounding.
Height12.9 cm (5.08 Inches)
Length2.79 cm (1.1 Inches)
Weight0.18 kg (0.4 Pounds)
Width4.5 cm (1.77 Inches)
Part NumberM120621-C

5. Kielder

Kielder KWT-126-21 1/2" Deep Impact Socket 21mm / M14

Kielder - Even weight distribution along the socket length to impart maximum impact. Ideal accessory with kielder 1/2" 18v Impact Wrench and compatible with all other brands. 1 x 21mm m14 Socket. Manufactured from high quality Chrome Molybdenum steel, offering increased durability. Strong and robust inner wall, whilst still maintaining slimline outer diameter for easy access to sunken wheel nuts.
Height17 cm (6.69 Inches)
Length3 cm (1.18 Inches)
Weight0.23 kg (0.51 Pounds)
Width11 cm (4.33 Inches)
Part NumberKWT-126-21

6. Sealey

Sealey SP1221D Walldrive Fully Polished Deep Socket, 21mm, 1/2" Square Drive

Sealey - Drive: 1/2"Sq. Hardened and tempered for added strength. Cold-forged Chrome Vanadium steel socket. Size : 21mm. Chrome plated with a fully polished finish.
Height13.8 cm (5.43 Inches)
Length2.7 cm (1.06 Inches)
Weight0.16 kg (0.35 Pounds)
Width5 cm (1.97 Inches)
Part NumberSP1221D

7. A TL

1/2" Sq Drive Alloy Wheel Deep Impact Nut Car Socket Set 17-19-21mm

A TL - 1/2"" dr. Deep 6 PT sockets. 1/2"" sq drive alloy wheel deep impact nut car socket set 17-19-21mm details chrome molybdenum sockets, 19 and 21mm 1/2""sq drive sockets. Set comprises deep 17, hardened, 19, 21mm. Suitable for use with impact tools. Supplied in blow mould case. 1/2" sq drive alloy wheel deep impact Nut Car Socket Set 17-19-21mm. Colour coded sockets for easy size selection. Each six-point socket is sleeved and has an insert to prevent damage to alloy wheels and nuts. Size: 17, tempered and anodised for corrosion resistance.
BrandA TL
ManufacturerA TL
Part NumberA TL