13 Piece SetSizes Included: .050", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16" And 3/8"Ball End On Long Arm For Easier Angle Entry By Up To 25 DegreesMaxTorque Ball End On Short Arm Delivers 2X The Torque And Has A Entry Angle By Up To 15 Degrees2 Sided Key, One Ball End Other End MaxTorque Ball EndComes With Durable Plastic Holder With Size Markings For Easier Identification