Specifications:

• Knock-Out: 1"

BUSHING - INSULATING 1-3/8" (1" KO) Insulating Bushing (1,000)
(1" KO) Insulating Bushing (1,000)">	Quantity in Basket: None Code: BUSH138-M Price: $378.89
	Quantity:
Yes, this is the size for 1" Knock-Outs (1000 pack)