TPZ SB87511 1/2 IN KNOCKOUT BSHGS -

Topazs knockout bushings, constructed of lightweight, corrosion proof, strong 6/6 nylon are suitable for use with electrical knockouts. Ideal for fast and easy snap in installation into a knockout in a box or enclosure with vacancies from maintenance or modifications. Smooth rounded surface enables easy wire pulling. Resists wear, abrasion and damage from vibrations; capable of withstanding a push back force of greater than 35 pounds. Diameter sizes from 3/8 up to 3 7/8, KO sizes from 1/2 to 3 1/2; available in black. UL recognition.