.Made of high hardness chrome molybdenum steel for durability

.Sizes: 1/4",5/16"(8mm), 3/8",10mm, 7/16"(11mm), 12mm, 1/2",

13mm, 9/16(14mm), 5/8(16mm), 17mm, 11/16, 3/4(19mm); 3/8"  Adaptors

3/8" drive for use use with flat wrench, pliers, socket

wrench, adjustable wrench, Vise-Grip locking pliers, hand ratchets or impact wrench guns and air ratchets;

.The working end has a helical shaped flute to help grip

rounded fasteners, round head bolts and pan head screws;

.Packing size:20x12x4.5cm,680g/set