1/4 inch Thumbscrew L Bracket Screw Mount Adapter Bottom 1/4 inch-20 Female Thread (Pack of 4)

size: length: 20mm/0.78 inch; Thumb wheels (Knurled Cap):23mm/0.9 inch in diameter 1/4 inch screw head also a 1/4 inch thread on the bottom Package Contents: 4 x Thumb Screws Only the above package content other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.