Made of Tempered Chrome Vanadium Steel for longer life and durability. Plastic reusable Carrying / storage case included. Designed to remove stubborn, rusted, stripped, screws or bolts, even factory installed carriage type bolts with no slots to remove from. Each bit is for sizes 1/8-1/4", 1/4-5/16", 5/16-7/16", 7/16-9/16", or 9/16-3/4"

• Made of Tempered Chrome Vanadium Steel for longer life and durability.
• Plastic reusable Carrying / storage case included.
• Designed to remove stubborn, rusted, stripped, screws or bolts, even factory installed carriage type bolts with no slots to remove from.
• Each bit is for sizes 1/8-1/4", 1/4-5/16", 5/16-7/16", 7/16-9/16", or 9/16-3/4"

Made of Tempered Chrome Vanadium Steel for longer life and durability.imported