Spotweld Pilot, Manufacturer suggested retail price.$12.20 Features and Benefits: Economy and quality. Fast, accurate, burr-free holes for materials up to 3/16" thick in seven sizes for 1/4" and larger drill chucks. Spring loaded pilot "pops" the slug from the cutter. 1/4" Arbor with retractable pilot for Blair-cutters and Spot weld Cutters Manufacturer: Blair 1 yr warranty on material and workmanship