Best Electrical Knockout Punch

The Hillman Group 58179 2-1/2-Inch Hole Nylon Knock Out Seal, Black, 2-Pack

The knockout seal is ideal for electrical assemblies and can be used for covering knockout holes in electrical boxes.
The nylon knock-out seal features tool-free installation that can be placed easily by hand.
The seal features a high quality nylon that offers sturdy, reliable performance and corrosion resistance.
The gray color is designed to replicate the look of finished steel.
Comes with two seals, featuring a 2" trade size and fits a 2-1/2" diameter hole.

...ace of 6.1*4.1*3.1 inches allows you to wire more neatly.
the heat dissipation effect is better, and it has a longer service life. The front panel can be removed, making installation more portable. And the 1.2-inch combination hole with 4 areas (left, right, bottom, rear) can be directly connected to the switch and electrical panel from multiple directions.
100% satisfactory service: This product is an upgraded model developed by us in accordance with market needs. Its performance, material, life, safety and other aspects are optimized、upgrade by our professional engineers, and we provide customers with 18 Month’s high-quality after-sales service.
if you have any questions, please feel free to contact us.
Important❗❗We are committed to providing safer power transmission and make it comply with ETL standards, so we have set a more solid knockout to ensure that it is not easy to be penetrated to improve safety. It is necessary to use professional tools to penetrate (such as bi-metal hole saw/knockout punch).
If you encounter any problems, please feel free to contact us!.
❗❗If you damage the 30 Amp generator plug because you can’t get through the Knockout, you can try to contact us first (email or through the seller’s contact tool), we will....

Available in 28 different shapes and designs, including: bolt hole alignment, ball head separation, unfolding knuckle, center punch, knockout bolts and pins..
Product material: made of chrome vanadium steel, hardness: 54~58HRC, Heat treated chromium vanadium provides a high hardness rating that prevents rapid expansion of the head and passivation of the chisel and punch..
16PC Chromium Vanadium Steel：punch and chisel set comes with 16-pc. chrome vanadium punch and chisel set, 5-pc. pin punches, 5-pc. taper punch, 3-pc. cold chisel, 2-pc. center punch and chisel punch gauge..
12PC High Carbon Steel：6PC cold chisel set, 4PC pin punch set and 2PC center punch..
It is equipped with a special storage bag for easy carrying..

1.This 28pcs punch and chisel set contain: 16pcs punch and chisel set made of chrome vanadium,12pcs punch and chisel set made of carbon steel ..
2.Heat treated chromium vanadium provides a high hardness rating that prevents rapid expansion of the head and passivation of the chisel and punch..
3.Available in different shapes and designs, including: bolt hole alignment, ball head separation, unfolding knuckle, center punch, knockout bolts and pins..
4.Flat chisels are tempered to resist splitting and mushrooming..
5.Roll-up storage pouch makes easy storage..

Available in 16 different shapes and designs, including: bolt hole alignment, ball head separation, unfolding knuckle, center punch, knockout bolts and pins..
Product material: made of Chrome Vanadium Steel, hardness: 54~58HRC. Heat treated chromium vanadium provides a high hardness rating that prevents rapid expansion of the head and passivation of the chisel and punch..
5PC Tapered punch: 3/32" x 5-1/4", 1/8" x 5-3/4", 5/32" x 6", 3/16" x 6-1/4", 1/4" x 6-3/4".
5PC Punch: 3/32" x 4-1/4", 1/8" x 4-3/4", 5/32" x 5", 3/16" x 5-1/4", 1/4" × 5-3/4".
3PC Cold Chisels: 3/8" x 5-1/2", 1/2" x 6", 5/8" x 6-1/2".

Compatibility - works with all Greenlee knockouts. Same draw studs used with Intel-PUNCH , LS50L2 and 746A ram.
Package dimensions:18.7"L x 5.7"W x 16.4"H.

Available in 16 different shapes and designs, including: bolt hole alignment, ball head separation, unfolding knuckle, center punch, knockout bolts....
Heat treated chromium vanadium provides a high hardness rating that prevents rapid expansion of the head and passivation of the chisel and punch..
5PC Tapered punch: 3/32" x 5-1/4", 1/8" x 5-3/4", 5/32" x 6", 3/16" x 6-1/4", 1 /4" x 6-3/4" and 3PC Cold Chisels: 3/8" x 5-1/2", 1/2" x 6", 5/8" x....
5PC Punch: 3/32" x 4-1/4", 1/8" x 4-3/4", 5/32" x 5", 3/16" x 5-1/4", 1/4" × 5-3/4" and 2PC Center punch: 1/8" x 5", 3/16" x 6".
Product material: made of chrome vanadium steel, hardness: 54~58HRC.

Available in 16 different shapes and designs, including: bolt hole alignment, ball head separation, unfolding knuckle, center punch, knockout bolts and pins..
Heat treated chromium vanadium provides a high hardness rating that prevents rapid expansion of the head and passivation of the chisel and punch..
5PC Tapered punch: 3/32" x 5-1/4", 1/8" x 5-3/4", 5/32" x 6", 3/16" x 6-1/4", 1 /4" x 6-3/4" and 3PC Cold Chisels: 3/8" x 5-1/2", 1/2" x 6", 5/8" x 6-1/2".
5PC Punch: 3/32" x 4-1/4", 1/8" x 4-3/4", 5/32" x 5", 3/16" x 5-1/4", 1/4" × 5-3/4" and 2PC Center punch: 1/8" x 5", 3/16" x 6".
Product material: made of chrome vanadium steel, hardness: 54~58HRC.

Hydraulic unit provides true 13 US ton hydraulic punching force..
Compatible with GREENLEE and other domestic punch tooling, draw studs or arbors that use - 3/4-16 & 3/8-23 thread sizes.
Hydraulic unit is the same unit used for TEMCo TH0037 Knockout Punch..