Made from a durable metal construction Designed for Tokyo Marui and most VSR-10 rifles Allows for a variety of sling mounts Two included in package as a spare or using as a two point slings In the Box 2X Sling Points 4X Small Spacers Specifications: Brand Tokyo MaruiBuild Durable Metal ConstructionCompatibility Designed for TM VSR-10 and Most Other Branded VSR-10 California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov