Designed to be mounted in the head of a grip head or grip arm 5" (12.7cm) steel baby 5/8" (16mm) pin Knurled Recess machined in the pin gives better grip and prevents light fixtures and accessories from slipping 1/4"-20, 3/8"-16 Female Threads. The head of the pin is tapped with a 1/4"-20 thread and the collar or tail end of the pin is tapped with a 3/8"-16 thread This 5" (12.7cm) steel Baby 5/8" (16mm) pin is designed to be mounted in the head of a grip head or grip arm and still have a few inches sticking out of the head where a light fixture or any other accessory with a baby receiver can be mounted. The combination of a grip head and grip arm give flexibility to position light fixtures or any accessory with a baby receiver virtually anywhere. The End Collar will save light fixtures or accessories by preventing the pin from slipping through the grip head if it ever loosens unexpectedly. Specifications Weight: 0.46lb / 0.21kg Color: Silver Product Height (in): 0.61in Product Height (cm): 1.54cm Product Length (in): 5.51in Product Length (cm): 14.0cm Product Width (in): 0.78in Product Width (cm): 1.99cm Product Weight (lb): 0.46lb Product Weight (kg): 0.21kg Primary Material: Steel Warranty: Limited Two-Year Warranty Fixed Stand Adapter: Baby 5/8" (16mm) Stud taping 1/4"-20 Male Thread