Astro 1756 Air Spot Drill with 5.5″ Deep Clamp Kit and 5 Drill BitsAIR SPOT DRILL with 5. 5" Deep Clamp Kit 2 Speed Free Speed 1,600rpm Adjustable depth stop which allows you to drill out just the spot weld and not the panel beneath Drills out the entire spot weld, eliminating the need for grinding Lower speed decreases heat and extends drill bit life Kit Includes: 1 Air Spot Weld Drill with 3 x 8mm plus 2 x 6. 5mm 1 5. 5 Deep Clamp 5 Drill Bits 2pcs. 6. 5mm (#1720) and 3pcs 8mm (#1721) 1 In Line Oiler (#3000) 1 3