Tool Glossary

A specification is useful only when it answers the right question. Use this Glossary to understand the label, see what else to check, and move into a Tool Guide when the decision needs more detail.
Start with a category
A-Z tool terms
V
A
W
D
N
M
R
C
B
K
P
S
I
O
T
H
F
U
G
L
E
Most useful before you buy
Tool Guides go one step further
Glossary entries define the label. Tool Guides help you make the complete decision when you need to compare a category, verify compatibility, plan a setup, or understand project tradeoffs.
Browse Tool Guides Ask product support
Frequently asked questions
Does a higher specification always mean a better tool?
No. Compare the number with the related specification, operating mode, accessory, and exact product instructions.
Can two close-looking inch and metric sizes be used interchangeably?
Not automatically. Conversion does not prove that a socket, fastener, thread, arbor, collet, or bit will fit safely.
Does physical fit prove battery or accessory compatibility?
No. Check the exact platform, model numbers, controls, interface, ratings, and current manufacturer instructions.
Where should I go if a listing does not identify the specification?
Check the product page and current manual first. If the model, included parts, or interface is still unclear, ask TBD product support before ordering.