ITEM NAME:Aluminum Alloy Knob M6x17mm Hand Tightening Thumb Screw For Camera Rod Clamp Description: This is a Adjustable M6 Threaded Screw,it’s spring loaded. The handle is Aluminum alloy material, the screw is stainless metal material, strong and tight screw. Enable to be turned without tools. Material: aluminum alloy Size: 36x30x10mm Package Includes: 1 Piecex Camera M6 Screw SKU: DMO0011810663010089.This is a Adjustable M6 Threaded Screw,it’s spring loaded. Material: aluminum alloy.