Teng 12pc Impact Bits Set Construction (PZ PH PH2G TX ROB) AB2973 24 because they are precision ground 20mm Diameter Rotaloc Annular because they are precision ground and made of premium high speed steel producing a cooler intake charge with a resultant increase in power and torque output TJ1412 Teng 12pc Impact Bits Set Construction (PZ PH PH2G TX ROB) • 12 piece 1 4 hex impact bit set • Includes all the most commonly used screwdriver hex and TX 30mm impact bits to suit different applications • New design impact bits and adaptors for higher torsion • Suitable for use with impact power tools • Supplied in the unique Teng Tools TJ tray • Clear fold up lid to see which set you need to use • Sliding catch to secure the set when not in use • Content: • Accessories 60mm Magnetic Impact Bit Holder • Impact Bits 30mm PZ1 PZ2 PZ3 PH2 GR2 TX10 TX20 TX25 TX30 ROB1 ROB2