A professional quality screwdriver set at a DIY price! Powerbuilt professional screwdrivers are designed and constructed to meet the needs of professional technicians. They are designed to feel great in the hand with high-quality handle materials acetate and dual durometer cushion grip rubber. The durability comes from shafts constructed of silicone vanadium chrome magnesium (SVCM) alloy steel, and textured and magnetized tips for added grip. Sizes are clearly marked on handle caps for quick identification, and larger sizes feature hex bolsters on the shafts for added torque when needed.