【13 Piece Damaged Nut Extractor Kit】This kit includes 13 bolt extractor sockets, 3/8" 72 tooth ratchet and 3/8" connecting rod 【Puller Sizes】 3/4" (19mm), 11/16", 17mm, 5/8" (16mm), 9/16" (14mm), 13mm, 1/2", 12mm, 7/16" (11mm) ), 10mm, 3/8", 5/16" (8mm), 1/4". 【High Durability】 Nut Extractor of high hardness chrome-molybdenum steel processed bolt, reverse spiral grooves are designed for biting to provide maximum gripping power. 【Wide Applicability】3 nut extractor sockets /8" have hex sockets for use with open end wrench, pliers, adjustable wrench, sockets or locking pliers. With 3/8" ratchet and 3/8" connecting rod for use with hand ratchets, Impact Wrenches and air ratchets. 【Versatile Use】 The spiral socket set is suitable for removing rust and wear as well as to cover the paint coating of nuts and bolts