# 3/8" Drive Locking Extension Set SAE, Metric

**Manufacturer:** Proto  
**MPN:** `J7277L`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Proto |
| Manufacturer name | Proto |
| Manufacturer | Proto, PROTO, Stanley Proto |
| CategoryId | 11942 |
| CategoryIdL1 | 10 |
| CategoryIdL2 | 4423 |
| CategoryIdL3 | 11942 |
| CategoryL1 | Tools & Machining |
| CategoryL2 | Hand Tools |
| CategoryL3 | Sockets & Ratchets |
| CategoryL4 | Impact Socket Extensions |
| DimensionUnit | inch |
| GraingerSku | 5PZL9 |
| Extra Product Name | 3/8" Drive Locking Extension Set SAE, Metric |
| UPC | 662679006143, 94713803614 |
| UnitOfMeasure | EA |
| Weight | 1.44, 0.09, 0.15, 0.37, 1.35363828868, 1.3999999999999997, 1.40 |
| WeightUnit | lbs |
| cali_prop65_orglabel | False |
| cali_prop65_whtlabel | False |
| countryOfOrigin | US |
| height | 2.5 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 15.5 |
| moq | 1 |
| MPN | J7277L |
| multiple | 1 |
| qtyInStock | 114 |
| qtyInStockOverride | -2 |
| SKU | G1248852 |
| tierMinQty1 | 1 |
| tierPrice1 | 113.99 |
| url | https://www.zoro.com/proto-38-drive-locking-extension-set-sae-metric-j7277l/i/G1248852/ |
| width | 3.3 |
| EAN | 662679006143, 94713803614 |
| Part Number | J7277L |
| Model | J7277L |
| Product Group | Home Improvement |
| Drive Size | 3/8" |
| Overall Length | 3 in, 6 in, 12 in |
| Output Drive Size | 3/8 in |
| Input Drive Size | 3/8 in |
| SAE or Metric | SAE, Metric |
| Finish | Black Oxide |
| Item | Locking Extension Set |
| Drive Type | Female Square |
| Number of Pieces | 3 |
| Impact Rated | Yes |
| Includes | 3, 6, and 12 in Sockets |
| Features | Locking Extensions |
| Sockets Included | 12 in, 3 in, 6 in |
| Measurement Type | Metric, SAE |
| Number of Points | 4 |
| Locking | Yes |
| Output Drive Type | Male Square |
| Output Drive Shape | Square |
| Output Drive Gender | Male |
| Non-Sparking | No |
| Input Drive Gender | Female |
| Container Type | None |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G1248852 | 113.99 | 1 | 114 | 1 |
| Raptor Supplies | AE6DPA | 174.284253 | 1 | None | 1 |
| Zoro | G6488055 | 91.08 | 1 | None | 1 |
| Circle C Supply | PTO06110 | 86.4 | 1 | None | 1 |
| bscsource.com | J7277L | 119.09 | 1 | None | 1 |
| National Supply Network | B942173 |  |  | None | 1 |
| sustainablesupply.com | C2919741 | 87.34 | 1 | None | 1 |
| Guardian | 66531211 |  |  | None | 1 |
| Turner Supply | 267900614 |  |  | None | 1 |
| Applied Industrial | 105853824 |  |  | None | 1 |
| motionindustries.com | 05049676 | 517.88 | 1 | None | 1 |
| stellarindustrial.com | PROTO 7277L |  |  | None | 1 |
| grainger.ca | PRT7277L |  |  | None | 1 |
| autotoolworld.com | POJ7277L | 106.66 | 1 | None | 1 |
| gasandsupply.com | PRTJ7277L | 146.55 | 1 | None | 1 |
| National Supply Network | 66531211 | 126.95 | 1 | None | 1 |

---
Structured data: `/python/html6/product/500/75000000/75166000/part_--J7277L---Proto--9cd7171d20.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp