Product name:Ball Lock Pins Diameter: 12mm/0.47inch Clamping Length:13/25/45/60/76mm(Optional) Pin Body Material: Stainless steel /Aluminum Alloy Handle Material: Aluminum Alloy Package Content: 1 x Stainless Steel Quick Lock [Installation]: Press the button on the handle to retract the steel ball on the head of the pin body, then pass the quick-release pin through the pinhole. When the button is released, the steel ball pops out, the quick-release pin cannot be pulled out from the pinhole. Notice: 1.Please check the size before buying. 2.Due to manual measurement, please allow an error of 1-3mm. Thank you for your understanding. Light shooting and different displays may cause