Socket; Grip Ring: 7/8 O.D. x 7/16 I.D. (for 1 O.D. 16-18 gauge sq. tubing); Metal; Spring Retention; Square. Fits 7/16 GR stems up to 1 long (Item #87420) : Apollo Caster, Thats How We Roll

(image for) Socket; Grip Ring: 7/8" O.D. x 7/16" I.D. (for 1" O.D. 16-18 gauge sq. tubing); Metal; Spring Retention; Square. Fits 7/16" GR stems up to 1" long (Item #87420) - Click Image to Close