50 Pack One Half Inch Opened Black Snap-In Knockout Insulating Bushings For Cable Management And Wiring DIY Projects Fits Hole 0.51 To 0.53 Inch Inner 0.39 Inch Outer 0.65 Inch Height 0.41 Inch Durable Plastic Grommets

50-Pack Half-Inch Snap-In Knockout Insulating Bushings
✔️ 50 pcs, 1/2" mount; hole 0.51-0.53", inner 0.39", outer 0.65", height 0.41"

These snap-in insulating bushings convert raw knockout holes into neat, insulated openings for cables, wires, hoses, and tubes inside electrical enclosures. They’re ideal for switch boxes, metal panels, and equipment housings where wiring protection and vibration damping matter.

✅ Pack of 50 opened black snap-in knockout bushings for easy installation
✅ Mounting diameter: 1/2 inch; fits hole diameter: 0.51-0.53 inch (12.9-13.5 mm)
✅ Inner diameter: 0.39 inch (10.0 mm); Outer diameter: 0.65 inch (16.4 mm)
✅ Height: 0.41 inch (10.5 mm); Material: nylon 6/6, UL-rated flame retardant
✅ Maximum steel thickness: 1/8 inch; Color: black

💡 What is a knockout insulating bushing used for in electrical enclosures and cable management?

This handy part helps manage cables safely and cleanly in enclosures. - Protects cables from sharp enclosure edges and vibration - Provides insulation and abrasion protection for wires - Helps keep cables organized in switch boxes and panels✝️