9 Piece SetSizes Included: 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm And 10mmBall 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