Jet 775164-22-Piece S.A.E./Metric Ball Nose Hex Key Set Hydraulics Tools It is made of steel

It is made of steel for strength and durability

1-Inch Dr X 8-Inch Extension

6140 chrome vanadium steel (up to 1-1/4-Inch or 32mm sizes)

Sae scale on all edges allows marking on both sides of blade

Jet 775164-22-Piece S.A.E./Metric Ball Nose Hex Key Set Hydraulics Tools It is made of steelLong arm series allows access into tough spots and more torque on the fastener Ball nose design allows engagement of fastener at up to 25 Degree angle Precision chamfering for ease of insertion Industrial heat treated Chrome Vanadium steel Convenient carrying case keeps hex keys organized 22 Piece set combines 13 PC S. A. E. and 9 PC Metric with a convenient centre post that converts to a comfortable T or L Handle All items meet ANSI standards for