Features: 1. Made of good quality aluminum alloy, solid, durable and wear-resistant. 2. Designed with rubber pad which increases friction force and not easy to loose. 4. Suitable for camera, tripod, monopod and ball head, etc. Perfect accessories for photography lovers. 5. Lightweight, portable and easy to carry. Specifications: Material: Aluminum Alloy Color: Black 1/4" Female to 3/8" Male Adapter Screw Size: Diameter: Approx. 28mm/ 1.10 Inch; Screw Height: Approx.7 mm/ 0.28 inch; Total Height: Approx. 21mm/ 0.83 inch 3/8" Female to 3/8" Male Adapter Screw Size: Diameter: Approx. 28mm/ 1.10 Inch; Screw Hole Height: Approx. 12mm/0.47inch; Screw Height: 5mm/ 0.20 inch; Total Height: 15mm/ 0.59 inch Packing List: 1 x Adapter Screw Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List 1Made of good quality aluminum alloy, solid, durable and wear-resistant. 2Designed with rubber pad which increases friction force and not easy to loose. 3Standard 1/4inch and 3/8inch screws and screw holes. Three options of adapter screw: 1/4inch female to 3/8inch male, 3/8inch female to 1/4inch male, 3/8inch female to 3/8inch male. 4Suitable for camera, tripod, monopod and ball head, etc. Perfect accessories for photography lovers. 5Lightweight, portable and easy to carry.