General Tools

Buying Guide: Measuring, Grommets and Punches

Measuring Tools
The measuring tools include a locking utility micrometer, slide, digital and dial calipers, a protractor and a feeler gauge. The 132ME slide caliper measures inside and outside dimensions in inches or millimeters, so check the units you need before you order. Measure the area or part you are matching before you buy.

Grommet Kits and Setting Tools
The 1/4 in. diameter brass grommet kit is ideal for repairing canvas, tarpaulins, tents, awnings, sailcloth, lawn furniture and pool covers. Its setting tool and anvil are marked for each grommet size, and the kit includes a hole cutter. Match the grommet size to the hole, and measure the hole before you order.

Punches and Circle Cutters
The 1/8 in. hollow steel punch has a side-clearance hole that lets punched material slide through the body of the tool. The 7/8 in. bi-metal circle cutter adjusts to various diameters with the included hex wrench. Check the diameter in the product name before you order.

Frequently Asked Questions

What does General Tools make?
General Tools offers specialty tools such as a 22 in. telescoping magnetic pick-up tool with three LED lights, a 1/8 in. hollow steel punch, a 7/8 in. bi-metal circle cutter, a polished chrome inspection mirror, a digital moisture meter, a non-contact infrared thermometer, screwdriver sets and thread repair files.

How do I choose the right size or type of tool?
Measure the hole or area you need to match before you order, and check the units in the product name. For grommets, match the grommet size and setting tool marking to the hole. For punches and circle cutters, check the diameter in the name, such as 1/8 in. or 5/16 in.

Can I use the grommet kit on canvas or tarps?
Yes. The 1/4 in. brass grommet kit is ideal for repairing canvas, tarpaulins, tents and awnings. It includes a hole cutter, hardwood backer block and hardened mandrel. Follow the manufacturer's instructions when you set grommets, and match the grommet size to the hole.