Twist drills (also called twist drill bits, twist bits, drills, drill bits, drill points or screwdriver bits) are hole cutters which form holes in wood or metal, though they are best used for drilling metal. They are available in a wide range of sizes rated in numbers (wire-gauge bits), in fractions (fractional bits), or by a letter designation (letter size bits).
Two stage compressor
With a two stage compressor air is compressed in the first stage (large diameter cylinder), cooled in the intercooler, then compressed again in the second stage (smaller diameter cylinder). Normally used for air pressures from 140 to 175 psi.
Two-axis tracking
A solar array tracking system capable of rotating independently about two axes (e.g., vertical and horizontal).
Two-man saw
A long bladed saw with a handle at each end. Used for cutting down large trees.
Two-piece toilet
Toilet with a separate tank and bowl. Also referred to as a close-coupled toilet.
Two-position fence
The two-position fence easily adjusts for wide and narrow stock.
Two-step mortgage
Adjustable mortgage with one interest rate for the first five or seven years of the loan and another for the remained of the loan term.
Two-tank solar system
A solar thermal system that has one tank for storing solar heated water to preheat the water in a conventional water heater.
Two-to-four-family property
A piece of property that maybe owned by only one person but provides housing for up to four households.
Two-wire system
An electrical system with one hot and one neutral lead, sufficient for provide 120-volt service.
