SureGrip comfortable square handles. SureGrip vapor blasted tips. Hex bolster allow easy turning power with a wrench. Reduces hand fatigue. Lifetime warranty10 piece SureGrip Combination Screwdriver set provides a sure grip at both ends. The comfortable square handles give you a secure grip even with greasy hands. And the vapor blasted tips grip fasteners effectively. Hex bolster on many screwdrivers lets you generate easy turning power with a wrench. Set includes: SureGrip round screwdrivers - 1/4" x .045" x 1.52", 1/4" x .050" x 3.96", 5/16" x .055" x 5.87", 3/8" x .070" x 8.00", 3/8" x .070" x 9.90", 7/16" x .070" x 11.80", SureGrip Phillips Screwdrivers - #0 x 2.52", #1 x 3.00", #2 x 1.76", #2 x 4.00". Packaged in a plastic tray.