• Metal insert socket for caster stem
• Measures 1.2" tall
• Works with caster stems with grip neck mounting stems that measure 5/16" x 1 1/2" (8 x 38mm)
• Metal claw tooth ends to bite into wood surfaces (3/4" overall width at bottom)
• 0.38" wide outside diameter (for hole to be inserted into)
• Requires 5/16" diameter x 1-1/2" deep hole for tap-in insertion 
• Works with all of our grip neck stem casters (click here to view)
• Also available in plastic (S3272) with larger outside diameter and taller height
• Steel