Product Description The Go Big knurled screw by K-EDGE - for easy use The allows you to easily mount lights or cameras on suitable mounts. At first you can screw in the screw loosely and with a good grip with your hand. All you need then is a 4 mm hex key to tighten the screw. Technical Information:Material:aluminium (6061-T6) (knurled head), stainless steel (locking screw)Clamp:1 1/8" steerer tubeCompatibility:combo mounts, camera and light mountsFeatures:CNC machined aluminiuminjection moulded copolymer interfaceManufacturer Number:K13-070 Contents:1 x K-EDGE knurled head1 x K-EDGE locking screw1 x K-EDGE O-ring Weight: black: 10 g Manufacturer: K-EDGE 418 S. 9th St. Boise ID 83702 USA info@k-edge.com Distributor: GROFA Action Sports GmbH Otto-Hahn-Straße 17 65520 Bad Camberg Germany info@grofa.com