Ball Lock Bolt Compatible Table Hole Size 5/8 in Compatible With Welding Tabletop Features 1/4 in Hex Wrench Balls Retract for Insertion Expand to Align and Lock In Position Fixed Length For Connecting an Accessory to the Tabletop Maximum Jaw Opening 1 1/8 in Outside Diameter 0.6 in Overall Depth 2.8 in Overall Height 2 in Overall Length 2.8 in Overall Width 1 in Product Type Ball Lock Bolt Work Surface Pattern 5/8 in Hole Material Steel