Master Sets
These are the professional-grade kits for setting up a new shop, outfitting a service truck, or standardizing tooling across a maintenance crew. Every set here is built by Wright Tool in Barberton, Ohio: hot forged alloy steel, built to ASME B107-series standards, and covered by the manufacturer's Limited Lifetime Warranty. Buying one master set instead of piecing tools together gets every mechanic the same sockets, wrenches, and drive tools, which matters when a crew shares a truck or a tool room signs tools in and out.
Which size master set fits the job
| Tier | Typical piece count | Who it fits |
|---|---|---|
| Apprentice and starter sets | 50 to 100 pieces | First-year mechanics, single-trade service calls |
| Intermediate sets | 200 to 260 pieces | General maintenance techs, one loaded service truck |
| Master maintenance sets | 260 to 370 pieces | Plant maintenance rooms, aircraft and fleet shops |
| Mega master sets | 425 to 556 pieces | Full shop or tool-crib standardization in one purchase |
Fractional (SAE) sets cover 1/4", 3/8", 1/2", and 3/4" drives; metric master sets and add-on sets extend the same drives in millimeter sizes. If your fleet mixes domestic and imported equipment, pair a fractional master set with a metric add-on set instead of doubling up on drive tools.
What comes with a set
Sets arrive tools-only in fitted metal boxes, so they drop straight into an existing tool room. If you are outfitting from scratch, browse tool storage for chests and utility carts sized to hold a master set, and torque tools to round out an engine or structural bay. Individual sockets and ratchets and wrenches are also available open-stock for fill-ins, so a lost socket never sidelines the whole set.
Frequently asked questions
Products
10 products from 1 company

Wright Tool
Wright Tool 151 Piece Metric Add-on Set 1/4" 3/8" & 1/2" Drives Tools Only
$2,394.00
$4,200.75

Wright Tool
Wright Tool 218 Piece Fractional Intermediate Set 1/4" 3/8" & 1/2" Drives Tools Only
$4,457.00
$7,818.73

Wright Tool
Wright Tool 255 Piece Fractional Intermediate Set 1/4" 3/8" 1/2" & 3/4" Drives Tools Only
$6,825.00
$11,973.14

Wright Tool
Wright Tool 260 Piece Metric Master Maintenance Set 1/4" 3/8" & 1/2" Drives Tools Only
$5,494.00
$9,638.06

Wright Tool
Wright Tool 368 Piece Fractional Master Maintenance Set 1/4" 3/8" & 1/2" Drives Tools Only
$7,957.00
$13,960.09

Wright Tool
Wright Tool 425 Piece Mega Fractional Master Set 1/4" 3/8" 1/2" & 3/4" Drives Tools Only
$10,341.00
$18,141.89

Wright Tool
Wright Tool 53 Piece Fractional Apprentice Set 3/8" Drive Tools Only
$1,117.00
$1,959.23

Wright Tool
Wright Tool 97 Piece Fractional Aircraft Mechanics Starter Set 1/4" 3/8" & 1/2" Drives Tools Only
$1,915.00
$3,360.49

Wright Tool
Wright Tool 278 Piece Fractional/Metric Master Set 1/4" 3/8" 1/2" & 3/4" Drives Tools Only
$5,215.00
$9,148.92

Wright Tool
Wright Tool 556 Piece Mega Fractional/Metric Master Set 1/4" 3/8" 1/2" & 3/4" Drives Tools Only
$12,736.00
$22,343.00