Williams SNP1216RC Combination Wrench 1/2 Inch High-Polish Chrome Rounded

The Williams SNP1216RC is a combination wrench, 1/2 inch opening, rounded open end, 12-point box end, 7 inch overall length, high-polish chrome, standard head.

The 7 inch length against a 1/2 inch fastener is worth pausing on, because wrench length is engineered rather than arbitrary.

A wrench's length is chosen so that a person applying comfortable hand force to the end produces roughly the correct torque for that size of fastener. That relationship holds across a whole set: the small wrenches are short, the large ones long, and the reason is that a short wrench on a large bolt cannot generate enough and a long wrench on a small bolt generates far too much.

Which is why the two most common wrench mistakes are the same mistake in opposite directions. Slipping a pipe over a wrench to break a bolt loose defeats the design and snaps the bolt or the tool. And using a large wrench on a small fastener — because it was the one in reach — strips the thread before the hand feels anything.

The wrench is telling you how hard to pull. Trust it.

The 12-point box gives engagement every thirty degrees, which is access. Six-point gives more contact on the flats, which is grip on a seized fastener.

The rounded open end contacts the flats rather than the corners.

Brand

Williams

SKU

SNP1216RC

Category

Hand Tools

Weight

0.22 lbs

Dimensions

8.50 x 1.30 x 0.70

Price

$76.95

Availability

Call for pricing

Rating

4.33 / 5.0