Glides 7/8" - 5/16-18 THREADED INSERT Item # : OC440 78 T516 16-18GA 7/8" - 5/16-18 SQUARE THREADED ADAPTER INSERT GLIDE, BLACK 16-18GA $0.99 Quantity Default Title - $0.99 Add To Cart Item Weight 0.05 lb Glide Color Black Glide Inside Diameter 5/16" Glide Material Plastic Glide Outer Diameter 7/8" Glide Outside Diameter 7/8" Glide Style Threaded Inserts Square product type Glides