PLEASE NOTE: WE ORDER ALL ITEMS FROM THIS SUPPLIER AS WE GO ALONG, AND WE NEED TO CHECK WITH THE SUPPLIER FIRST TO MAKE SURE THERE IS AVAILABILITY. MANY THANKS IN ADVANCE, WATERWORLD SPORTS The Lens Holder 67mm for UL-Type Arm is a lens holder that attaches to Flat UL-TYPE 1'' ball arms and allows for secure attachment of 67mm accessory lenses when they are not in use. Specifications Material: Hard Anodized Aluminum Dimensions (D x H): 74.7 x 17.5 mm / 2.94 x 0.69 inch Weight: 53 g / 1.87 oz Included in box: Lens Holder, short screw and long screw Compatibility Mounts on Flat UL-TYPE 1'' ball arms. For securing two wet lenses, two lens holders can be mounted opposite each other on the same arm. Can be converted to a bayonet lens holder by mounting the Bayonet Female on M67 Housing MB1 (Cat. No. 4050) on the lens holder.