3/8-Inch Drive 12-Point Long Hand Socket

Overview

This 3/8-inch drive, 12-point long hand socket is engineered for mechanics who demand precision and reach in confined spaces. The extended 63mm length provides superior access compared to standard sockets, while the 12-point profile delivers a secure grip on fasteners—reducing rounding and cam-out on both metric and fractional nuts. Available in 17 sizes from 8mm to 24mm, these sockets are manufactured from hardened chrome-finished steel with a knurled grip band for reliable hand control. Pair these with shorter-reach socket alternatives or deep-access variants to build a complete socket assortment across your shop.

Key Features

• 12-Point Internal Profile: Safer engagement on fasteners; reduced rounding risk compared to 6-point designs
• Extended 63mm Length: Reaches fasteners in recessed engine bays, tight corners, and assembly cavities
• Chrome-Finished Steel: Durable, corrosion-resistant construction suitable for daily shop use
• Knurled Grip Ring: Textured band near the drive end prevents slipping during use
• 3/8-Inch Square Drive: Compatible with standard ratchets, extensions, and pneumatic impact tools
• Metric Size Range: 8mm through 24mm (17 individual sizes)

Why Resellers Choose This Socket

Inventory Versatility: The 17-size range covers the vast majority of automotive fasteners. Stock the full set or curated assortments (e.g., 8–19mm for light duty, or 10–24mm for heavy fastener applications).

Margin-Friendly: Long sockets command a modest premium over short variants, yet carry minimal additional material cost. Strong wholesale margins with reliable retail demand.

Cross-Sell Opportunity: Mechanics buying these will need extensions, universal joints, and ratchet handles—creating natural upsell pathways in your catalog.

Professional Perception: The 12-point design and extended length signal quality to end-users; they're perceived as "proper" tools versus budget alternatives, justifying higher retail positioning.

Technical Specifications

Size (mm)	Socket ID	D1 (mm)	D2 (mm)	T (mm)	Length (mm)
8	543208	11.8	17	9	63
9	543209	13.2	17	9	63
10	543210	14.5	17	9	63
11	543211	15.7	17	12	63
12	543212	17	16	12	63
13	543213	18	16.5	12	63
14	543214	19.6	17	15	63
15	543215	20.9	18	15	63
16	543216	22	19	15	63
17	543217	23.4	20	15	63
18	543218	24.6	21	18	63
19	543219	26	23	18	63
20	543220	27.1	24	18	63
21	543221	28	25	18	63
22	543222	29.6	26	21	63
23	543223	31.6	27	21	63
24	543224	32	28	21	63

Drive Type: 3/8-inch square female
Point Count: 12-point (internal)
Material: Chrome-finished hardened steel
Finish: Satin chrome with knurled grip band
Construction: Forged and precision-machined

Application Context

These sockets excel in automotive assembly, engine work, transmission service, and any application requiring extended reach. The 12-point design is particularly valuable for time-critical shop work where fastener security matters—mechanics appreciate the reduced rounding risk on corroded or damaged fasteners.

Note: The extended 63mm length makes these less suitable for ultra-tight spaces where short sockets are mandatory. For those applications, consider standard-length variants. For deep recessed fasteners requiring maximum reach, evaluate deep-access socket designs.

Reseller Value Proposition

Order full assortments or build custom kits tailored to customer segments (automotive techs, industrial maintenance, fleet service). The 17-size range, combined with robust chrome construction, positions these as a professional-grade offering. Favorable wholesale pricing enables healthy retail margins while maintaining competitive market positioning. Stock depth recommendations: minimum of 3–5 units per size for high-turnover shops; 1–2 per size for specialty or slow-moving applications.