1. Made of high quality plastic and stainless steel. 2. Fits standard 3/8 inch tripod foot and monopod foot. 3. Compatible with 3/8 inch screw type tripod/monopod, such as for Andoer Benro Kingjoy tripod, monopod. 4. Practical tripod/monopod accessory for stable indoor & outdoor shooting, with excellent anti-skid property.