Search the catalog

Search the catalog

BrandsSlings & Rigging Hoists & Trolleys Cutting Tools & Metalworking Hand Tools Power Tools Safety & Security Fall Protection Material Handling MRO Supplies Construction Supply Fasteners & Hardware Abrasives

Related products

Slings & Rigging

Below-the-Hook Lifting Attachments
Hoists & Trolleys
Lifting & Rigging Hardware
Load Monitoring
Load Securement
Rope, Twine & Accessories
Slings

Fasteners & Hardware

Anchors
Bolts
Construction Hardware & Supplies
Fastener Assortment Kits
Hardware Supplies
Nails
Nuts

Material Handling

Conduit
Cranes & Festoon Equipment
Dollies & Movers
Drums
Hand Trucks
Hydraulics
Jacks & Accessories

Shop by Brand

CM
BBI
3M
CROSBY
CARTEC
ACCUFORM
CAMPBELL

© 2026 Max Supply

Shipping & Returns Privacy Terms

Offers1

$250 away from free shipping

Home
Construction Supply
Jobsite Ops
Electrical
Electrical Tools
Knockouts & Accessories

MPN 721E-20.4

SKU 721E-20.4-11113

Greenlee® 721E-20.4 Slug-Buster® Replacement Punch, Round, 20.4 mm dia Cutting, Applicable Materials 14 ga Mild Steel

In stock$39.58$3958

Greenlee® Slug-Buster® replacement punch, round, 20.4 mm dia cutting, applicable materials: 14 ga mild steel.

Specifications

UPC: 783310319719
Brands: GREENLEE
Warranty: 1 year limited
Width: 2.4"
Height: 1 1/2"
Length: 2.2"
Manufacturer: Emerson Electric
Package Quantity: 1/Each
Standard Approvals: ARRA Compliant
Manufacturer Part Number: 721E-20.4

Related products

Related products

Greenlee® Nail Eater® Extreme Short Drill Bit

GREENLEE

Greenlee® Nail Eater® Extreme Short Drill Bit$29.99–$56.61^$29⁹⁹–^$56⁶¹

Greenlee® F021627 Female Coupler, High Pressure, 3/8-18 NPTM, 10000 psi Use With RK1240, RK1240C 12 ton Single Acting Die Type Crimping

GREENLEE

Greenlee® F021627 Female Coupler, High Pressure, 3/8-18 NPTM, 10000 psi Use With RK1240, RK1240C 12 ton Single Acting Die Type Crimping$98.56^$98⁵⁶

Greenlee® LS50L11B Gator® Punch Tool, Single Trigger, 6 ton Maximum Punch Force

GREENLEE

Greenlee® LS50L11B Gator® Punch Tool, Single Trigger, 6 ton Maximum Punch Force$1,449^$1,449⁰⁰

Greenlee® LS50LB Battery-Powered Hydraulic Knockout Driver, 7 ton with Case

GREENLEE

Greenlee® LS50LB Battery-Powered Hydraulic Knockout Driver, 7 ton with Case$1,039.50^$1,039⁵⁰

Greenlee® 1810 Little Kicker® Hand Offset Bender, For Pipe dia 1/2 in EMT

GREENLEE

Greenlee® 1810 Little Kicker® Hand Offset Bender, For Pipe dia 1/2 in EMT$400^$400⁰⁰

Greenlee® 28008 Bending Shoe, Rigid Conduit, for Use with 555CX, 555DX and 555C Electric Conduit Bender

GREENLEE

Greenlee® 28008 Bending Shoe, Rigid Conduit, for Use with 555CX, 555DX and 555C Electric Conduit Bender$2,930.85^$2,930⁸⁵

Greenlee® 390 Li'l Fisher® Vacuum/Blower Power Fishing System, Compact, 101.2 CFM, 1/2 HP, 120 VAC, 5 gal Tank

GREENLEE

Greenlee® 390 Li'l Fisher® Vacuum/Blower Power Fishing System, Compact, 101.2 CFM, 1/2 HP, 120 VAC, 5 gal Tank$1,357.85^$1,357⁸⁵

Greenlee® 881GXE980MBTS Cam-Track® Bender for 2-1/2 to 4 in with 980 Pump and Mobile Bending Table

GREENLEE

Greenlee® 881GXE980MBTS Cam-Track® Bender for 2-1/2 to 4 in with 980 Pump and Mobile Bending Table$43,229.85^$43,229⁸⁵

Greenlee® K05-SYNCRO K-Series Manual Mechanical Crimp Tool, 8 to 1/0 AWG, No

GREENLEE

Greenlee® K05-SYNCRO K-Series Manual Mechanical Crimp Tool, 8 to 1/0 AWG, No$376.45^$376⁴⁵

Greenlee® 7906SB Quick Draw® 90 Hydraulic Punch Set, 16 pc, 10 ga Punch, Mild Steel Housing

GREENLEE

Greenlee® 7906SB Quick Draw® 90 Hydraulic Punch Set, 16 pc, 10 ga Punch, Mild Steel Housing$1,369.50^$1,369⁵⁰

Greenlee® 980 Hydraulic Power Pump

GREENLEE

Greenlee® 980 Hydraulic Power Pump$6,264.15^$6,264¹⁵

Greenlee® 7238SB Slug-Buster® Knockout Punch Die Kit, 10 ga, 1/2 to 2 in, for Use with 3/8 in, 3/4 in Draw Stud, Mild Steel

GREENLEE

Greenlee® 7238SB Slug-Buster® Knockout Punch Die Kit, 10 ga, 1/2 to 2 in, for Use with 3/8 in, 3/4 in Draw Stud, Mild Steel$457.85^$457⁸⁵

Greenlee® 721E-20.4 Replacement Punch, Round | Max Supply