Wheeler 21-Piece Add-On Screwdriver Set for Gunsmithing and Firearm Maintenance

The Wheeler Professional Gunsmithing Screwdriver Add-On 21 Piece Set is a great addition to the 72 or 89 piece Wheeler Engineering Screwdriver Sets. The hex bit sizes are: 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 4.5mm 5mm, 5.5mm, 6mm, 7mm, and 8mm. Torx bit are: T6, T7, T8, T9, T10, T15, T20, T27, T30. The set comes in a plastic storage tray. Also, includes a 1/2" x 1/4" socket driver. All bits are made of durable S2 tool steel.