Overview Similar Products –> Product Description Fasco Grom6008 Mounting Grommets with Steel Sleeve for 3/4″ Slot The unit itself is designed to fit a 3/4″ hole. the ‘mushroom shape’ – this is what the bushing fits into: the ‘stem’ is 3/4″ long, 3/4″ diameter the ‘cap’ is 1″ diameter, 3/8″ thick the ‘ring’ – Steel Bushing Sleeve is 3/4″ ID, 1-3/8″ OD, 9/16″ thick SO LD INDIVIDUALLY Product Videos Custom Field Product Reviews