4 in J cable support hooks are versatile and can be attached to a wide variety of structures using beam clamps clips and other support components available from Garvin. These support hooks eliminate the problem of point loads that can cause band width damage to sensitive cables such as fiber optic CAT 5E 6 7 or many others. Garvin' 4 in J cable support hooks are an inexpensive alternative to cable trays. This J-Hook has a cable fill rate of 300 Cat5E cables. Retainer Clip Included!